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2011 in science
Overview of the events of 2011 in science

The year 2011 involved many significant scientific events, including the first artificial organ transplant, the launch of China's first space station and the growth of the world population to seven billion. The year saw a total of 78 successful orbital spaceflights, as well as numerous advances in fields such as electronics, medicine, genetics, climatology and robotics.

2011 was declared the International Year of Forests and Chemistry by the United Nations.

Events, discoveries and inventions

January

February

  • 2 February – The Linac Coherent Light Source, an X-ray source a billion times brighter than previous sources, becomes operational at Stanford University. The device could potentially revolutionize 3D bioanalysis techniques, especially in the analysis of proteins and viruses.39
  • 3 February
    • A blood test to detect vCJD is developed by British scientists, who say it could identify healthy people who are carriers of the disease.4041
    • Further data from the Kepler space telescope published in Nature reveals that the star Kepler-11, located 2,000 light years from Earth, has a planetary system including six planets, which range between two and four-and-a-half times the radius of Earth, and between two and thirteen times its mass. Five orbit the star closer than Mercury orbits the Sun, and all are likely to have atmospheres made of light gases, and to be too hot to support life. The data also includes details of more than 1,000 additional exoplanet candidates.4243
  • 4 February – Scientists reveal a tiny artificial brain, derived from rat neurons, that exhibits 12 seconds of short-term memory.4445
  • 7 February – Scientists at Oxford University successfully test a universal flu vaccine, which should work against all known strains of the illness.4647
  • 9 February – Using 25 years of evidence from over 470,000 participants, researchers show that sleep deprivation and disrupted sleep patterns can have long-term, serious health implications.48
  • 10 February – Scientists identify the root molecular cause of a variety of illnesses brought on by advanced age, including waning energy, failure of the heart and other organs, and metabolic disorders such as diabetes.49
  • 11 February – Scientists show that stem cells delivered via a nasal spray lead to an improvement of motor functions in rats with Parkinson's disease-like symptoms.5051
  • 15 February
  • 16 February – Researchers find a way of manipulating tiny swimming robots, just 1.3 millimetres long, using electric currents in water.5556
  • 17 February
    • Scientists build the world's first anti-laser, capable of absorbing an incoming laser beam entirely.5758
    • A hummingbird-like "Nano Air Vehicle" is demonstrated for the first time, in an attempt to secure a DARPA contract to create small surveillance aircraft.59
  • 20 February – Stanford University researchers create new stretchable solar cells that could power artificial electronic 'super skin', capable of detecting chemicals and biological molecules. The potential applications include clothing, robotics, prosthetic limbs and more.6061
  • 21 February – New research indicates that bilingual speakers are better at multitasking, because they are better at editing out irrelevant information; this overturns previous assumptions of bilingualism causing confusion, especially in children.6263
  • 22 February
  • 28 February

March

  • 1 March
    • UK researchers demonstrate an optical microscope with one of the highest resolutions yet achieved, capable of imaging objects as little as 50 nanometres across.7172
    • Scientists have determined how to generate a backward-pulling force from a forward-propagating beam, effectively creating a form of "tractor beam".7374
    • Swiss researchers discover a gene in wasps that allow them to reproduce asexually.75
  • 4 March
  • 5 March – The United States Air Force launches its robotic Boeing X-37 spaceplane on its second long-duration spaceflight; the spaceplane ultimately remains in orbit for 469 days.79
  • 8 March – The world's first tissue-engineered urethras are successfully used.8081
  • 12 March – Surgeons in Houston, Texas, successfully implant the world's first continuous-flow artificial heart in a human patient. The turbine-based device is efficient and long-lived, and may herald the mass production of smaller and more durable alternatives to conventional artificial hearts.82
  • 14 March – Archeologists believe that they have found the lost city of Atlantis in mud swamps near Cadiz, Spain. They theorize that a tsunami struck the ancient settlement; a television special on the National Geographic Channel later investigates their findings.8384
  • 16 March – Scientists report the first successful use of microcarriers to bring anti-cancer drugs to the targeted area in the liver of a living rabbit.85
  • 18 March – NASA's MESSENGER spacecraft successfully enters orbit around the planet Mercury – the first probe to do so.86
  • 20 March
    • A new way of delivering drugs to the brain, using the body's own exosomes, is developed by scientists, overcoming a major barrier to the delivery of potential new drugs for many neurological diseases, including Alzheimer's.8788
    • Researchers announce the development of a three-dimensional nanostructure for battery cathodes that allows for dramatically faster charging, without sacrificing energy storage capacity. This could lead to cellphones that charge in seconds, and electric cars that charge in minutes.89
    • A new way of making battery electrodes, based on nanostructured metal foams, can be used to make a lithium-ion battery that recharge by 90% in under two minutes.9091
    • Scientists demonstrate how SHANK3, a brain protein, may trigger autism-like behavior in mice by stopping effective communication between brain cells.9293
  • 22 March – A 6 cm-by-6 cm chip holding nine quantum devices, among them four "quantum bits", is demonstrated at the American Physical Society meeting in Dallas, Texas. It is hoped that further scaling up to 10 qubits should be possible later this year.9495
  • 24 March
    • A landmark study indicates that pioglitazone prevents the development of type 2 diabetes in 72% of pre-diabetic subject participants, the largest such decrease yet demonstrated by any intervention.9697
    • The first sperm cells are grown in a lab.9899
  • 27 March – Harvard University scientists demonstrate use of an electric field to extinguish an open flame more than 1 foot tall, a development they say could yield fire-suppression alternatives to water and chemical retardants.100101
  • 31 March – Scientists announce the successful controlled entanglement of 14 quantum bits (qubits), realizing the largest quantum register yet produced—nearly double the previous record for the number of entangled quantum bits realized.102103

April

  • 6 April – Japanese scientists announce that they have created working retinas from mouse stem cells.114115
  • 11 April – ZRTP, a cryptographic key-agreement Real-time Transport Protocol devised by Phil Zimmermann, is published.116
  • 12 April
    • According to a controversial study, the aging process can be reduced by increasing telomere lengths without cancer risk.117118
    • Scientists produce the first comprehensive analysis of the greenhouse gas footprint of shale gas, concluding that its environmental impact is worse than coal.119120
  • 13 April
    • Cellphones may be contributing to a global decline in honeybee populations, according to researchers.121122
    • American scientists discover that light can demonstrate strong magnetic effects when travelling through certain materials at certain intensities. This finding, which overturns a century-old scientific assumption that light's magnetic effects are too weak to be tangible, may lead to the development of solar panels capable of storing energy magnetically.123
  • 14 April
  • 15 April
    • The world's first human brain map is unveiled, providing an interactive research tool that will help scientists to understand how the brain works. The map is hoped to aid new discoveries in disease and treatments; one thousand anatomical sites in the brain can be searched, supported by more than 100 million data points that indicate the gene expression and biochemistry of each site.127
  • 16 April – Sci-Hub – a shadow library website for open access that provides free access to most paywalled research papers and books without regard to copyright – is launched.128129
  • 17 April – Researchers have injected biodegradable nanofiber spheres carrying cells into wounds to grow tissue.130
  • 18 April
    • Scientists demonstrate mathematically that asymmetrical materials should be possible; such material would allow most light or sound waves through in one direction, while preventing them from doing so in the opposite direction; such materials would allow the construction of true one-way mirrors, soundproof rooms, or even quantum computers that use light to perform calculations.131
    • A new design for thin-film solar cells has been developed that requires significantly less silicon than standard models, and may be more efficient at capturing solar energy.132
  • 19 April – An international research team publishes a new method to produce belts of graphene, called nanoribbons. By using hydrogen, they have managed to transform single-walled carbon nanotubes into ribbons.133
  • 20 April – Scientists describe a Chinese spider they say is the biggest fossilised arachnid yet found; Nephila jurassica, as they have called their specimen, would have had a leg span of some 15 cm.134135
  • 21 April
    • Scientists successfully cause a modified anti-malaria gene to spread amongst a population of mosquitoes.136137
    • Researchers have built a carbon nanotube synapse circuit whose behavior in tests reproduces the function of a neuron, the building block of the human brain.138
    • Israeli engineers have built an artificial device capable of detecting cancers of the head and neck by analysing breath.139140
  • 22 April – Gene transcription is observed in real time in a live cell.141142143
  • 24 April – Small lasers capable of igniting a fuel/air mixture more efficiently, resulting in less pollution, may replace spark plugs in gasoline engines.144145146147
  • 25 April
    • Some microbes can survive gravity more than 400,000 times that felt on Earth, a new study says. By contrast, most humans can tolerate three to five times Earth's surface gravity before losing consciousness.148149
    • The European Commission has approved plans to build a trio of lasers that will each dwarf the power of any previous laser. The project, called the Extreme Light Infrastructure, will lay the groundwork for building an even more powerful laser that could try to pull "virtual" particles out of the vacuum of space-time.150
  • 28 April

May

  • 13 May
    • New results from mice cast doubts on hopes for self-transplants generated from the receiver's stem cells, as such transplants can be rejected by the immune system.186187
    • According to new research, a small set of genes located within the mitochondria of cells is crucial to unravelling the secrets of male infertility.188189
    • The discovery of a new physical phenomenon could yield transistors with greatly enhanced capacitance – a measure of the voltage required to move a charge. This, in turn, could lead to the revival of clock speed as the measure of a computer's power.190
    • Contaminated water can be cleaned much more effectively using a novel, cheap material, which could offer a low-cost way to purify water in the developing world.191192
  • 15 May – Researchers have found that KLF14, a gene linked to type 2 diabetes and cholesterol levels, is in fact a 'master regulator' gene, which controls the behaviour of other genes found within fat in the body.193194
  • 16 May – NASA's Space Shuttle Endeavour launches on its final mission.195
  • 18 May
    • Scientists have achieved invisibility in the visible light range of the spectrum.196
    • Rogue planets lacking parent stars may outnumber "normal" exoplanets by at least 50 percent, and are nearly twice as common in our galaxy as main-sequence stars, according to a new study.197198
  • 19 May
    • By using electrical stimulation of the spinal cord, a man from Oregon who became paralyzed after being hit by a car can stand and move his legs on his own.199200
    • Scientists have developed an open-source desktop genome analyzer. It works in conjunction with a browser that allows biologists to rapidly and easily analyze and process their high-throughput information. 201202
  • 20 May – A highly developed sense of smell kick-started the evolution of mammals' big brains, according to new research.203204205
  • 23 May
  • 24 May – A superhot substance recently made in the Large Hadron Collider is the densest form of matter ever observed, scientists have announced.210
  • 25 May
  • 26 May
    • Stanford University researchers have managed to turn human skin cells directly into neurons, without first turning them into pluripotent stem cells.217218
    • Researchers believe they have made the first experimental observation of the dynamical Casimir effect, using a rapidly moving mirror that turns virtual photons into real ones.219
  • 29 May – Human organs could be grown inside pigs for use in transplant operations, following research using stem cells.220221
  • 31 May
    • A team of Chinese physicists successfully entangles eight photons simultaneously and observes them in action; the previous record was six.222
    • Researchers have demonstrated the first true nanoscale waveguides for next generation on-chip optical communication systems; this holds potential for nanoscale photonic applications such as intra-chip optical communication, signal modulation, nanoscale lasers and bio-medical sensing.223
    • A NASA-led research team unveils the most precise map ever produced of the carbon stored in Earth's tropical forests; the data is expected to provide a baseline for ongoing carbon monitoring and research.224

June

  • 22 June
    • A newly developed multiferroic composite of nickel, cobalt, manganese and tin can be either non-magnetic or highly magnetic, depending on its temperature, making it capable of converting heat into electricity. (PopSci) (Adv. Energy Mater.) 
    • The brains of people living in cities operate differently from those in rural areas, according to a brain-scanning study. (The Guardian) (Nature) 
    • Scientists demonstrate an acoustic "cloaking device" that makes objects invisible to sound waves; such acoustic cloaking was proposed theoretically in 2008, but has only this year been put into practice. (BBC) (Phys. Rev. Lett.) 
    • Stanford University researchers have developed a new method of attaching nanowire electronics to the surface of virtually any object, regardless of its shape or composition. The method could be used in making everything from wearable electronics and flexible computer displays to high-efficiency solar cells and ultrasensitive biosensors.(Nano Lett.) 
  • 23 June – Single-celled yeast has been observed to evolve into a multicellular organism, complete with division of labour between cells. This suggests that the evolutionary leap to multicellularity may be a surprisingly small hurdle.(New Scientist) (PNAS) 
  • 24 June
  • 25 June – Stanford researchers have developed a microphone that can be used at any depth in the ocean, even under crushing pressure, and is sensitive to a wide range of sounds, from a whisper in a library to an explosion of TNT. They modeled their device after the extraordinarily acute hearing of orcas. (J. Acoust. Soc. Am.) 

26 June

July

August

September

October

  • 28 October
    • British scientists report that a daily dose of aspirin can reduce the incidence of bowel cancer in people at high risk of the disease. (BBC) (The Lancet) 
    • Human-caused climate change is already a major factor in more frequent Mediterranean droughts, according to a new study, which shows that the magnitude and frequency of drying is too great to be explained by natural variability alone. (NOAA) (J. Clim.) 
    • NASA launches the NPOESS Preparatory Project – the first of its next generation of polar-orbiting satellites dedicated to gathering weather and climate data. (BBC) (NASA)
  • 29 October – CERN researchers attempt to repeat a recent experiment that apparently yielded faster-than-light neutrinos, using a more efficient system of measurement to validate their results. (The Guardian)
  • 31 October

November

  • 1 November
  • 2 November
    • China's uncrewed Shenzhou 8 spacecraft robotically docks with the orbiting Tiangong-1 space station module, marking China's first orbital docking, and a major milestone in its efforts to construct a full-scale space station by 2020. (BBC)
    • American researchers delay, and in some cases even eliminate, the onset of age-related symptoms such as wrinkles, muscle wasting and cataracts in mice. The development may have significant implications for the study and treatment of such symptoms in humans. (BBC) (Nature) 
    • Morocco is chosen as the first location for Desertec – a German-led, €400bn project to build a vast network of solar and windfarms across North Africa and the Middle East, with the aim of providing 15% of Europe's electricity supply by 2050. (The Guardian)
  • 4 November
    • Six men emerge from the 520-day MARS-500 isolation experiment, which aimed to simulate a human mission to Mars. The experiment, undertaken at a Moscow scientific institute, was intended to investigate the isolation of long-duration spaceflight and its effects on the human body and mind. (BBC)
    • A 20-year-old alternative solar cell design using dye-sensitized nanocrystal cells (DSC) could lead to cheap, printable cells, revolutionising solar power use worldwide, according to a new study. (KurzweilAI) (J. Am. Chem. Soc.) 
  • 5 November
    • An American doctor claims that brown eyes can safely and permanently be turned blue by using short laser pulses to destroy pigment in the iris. (BBC)
    • An official White House report states that "The U.S. government has no evidence that any life exists outside our planet, or that an extraterrestrial presence has contacted or engaged any member of the human race." It furthermore asserts that there is "no credible information to suggest that any evidence is being hidden from the public's eye." Although odds are "pretty high" that there may be life on other planets, "the odds of us making contact with any of them—especially any intelligent ones—are extremely small, given the distances involved." (UniverseToday) (White House)
  • 6 November – Dopamine-producing brain cells that are killed off by Parkinson's disease have been grown from stem cells and grafted into monkeys' brains by American researchers, in a major step towards new treatments for the condition. (The Guardian) (Nature) 

December

Prizes

Abel Prize

Main article: Abel Prize

Nobel Prize

Main articles: List of Nobel laureates in Physiology or Medicine, List of Nobel laureates in Physics, and List of Nobel laureates in Chemistry

Deaths

January

February

March

April

May

June

July

August

September

October

November

December

See also

References

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