Astronaut outside space station loses tool bag39

Grease gun mishap occurs during attempt to clean and lube a gummed-up solar panel joint 18/11/08 5:20 PM 39

Dark Martian winter silences Phoenix lander15

Small craft that carried Canadian-made weather station powers down its solar panels, ends mission to Mars 10/11/08 10:02 PM 15

Mercury livelier than thought, NASA finds

Probe find volcanoes spewed 'mysterious dark blue material' during planet's formation 31/10/08 12:37 PM

NASA back in contact – briefly – with Mars10

Days of Phoenix lander still numbered as sunlight wanes, dust storms kick up 31/10/08 1:29 PM 10

Hubble back in service5

Space telescope again taking stunning cosmic photos after series of repairs 31/10/08 8:35 AM 5

India launches first unmanned moon mission

Rocket blasts off on two-year mission to redraw maps of lunar surface 22/10/08 9:42 AM

Clearing the air for the space shuttle12

Canadian air-traffic controllers will assist NASA's next launch, but country's space program faces uncertain future 21/10/08 10:42 PM 12

Chinese astronaut takes historic walk in space83

China makes another step towards long-term goal of assembling a space lab as Zhai Zhigang completes country's first space walk 27/09/08 2:21 PM 83

Dangerous bacteria on rise, expert warns4

Hospitals worldwide show increasing levels of bacterium more powerful than MRSA superbug 18/11/08 12:35 PM 4

Colouring the other side of the brain6

Putting names to colours changes part of brain that perceives what colour it is 18/11/08 1:04 PM 6

Vitamins C, E fail to prevent cancer: study44

Men who took supplements were no more or less likely to develop cancer than men given a placebo, U.S. researchers said Sunday 16/11/08 1:30 PM 44

Key 'switch' found for breast-cancer drug2

Knowing which gene tamoxifen affects could eventually help doctors test for resistance to drug 12/11/08 1:05 PM 2

New wave of discovery shows octopus origins77

Species has common ancestor in Antarctic waters, researchers find in uncovering scores of creatures that redraw map of ocean life 10/11/08 12:16 AM 77

Souped-up cells catch even disguised HIV3

Genetically engineered killer T-cells, dubbed 'assassin' cells, see through infections, may slow spread of HIV 10/11/08 1:05 PM 3

Migraines may cut breast-cancer risk2

Women with history of migraine headaches 30 per cent less likely than others to develop breast cancer, U.S. study says 07/11/08 11:47 AM 2

Unleash good germs on bad: researchers7

Patients swabbed with probiotic Lactobacillus bacteria avoided infection as well as those washed with antiseptic 06/11/08 12:07 PM 7

New detergents wash away evidence23

Chemicals that generate oxygen bubbles erase telltale identifiers in bloodstains, study finds 06/11/08 11:43 AM 23

Egypt reveals new pyramid27

Discovery of 4,300-year-old structure made only two months ago at giant necropolis for rulers of Memphis, south of Cairo 11/11/08 11:53 AM 27

Highway to Hell

Phoenicians: Forgotten but not gone10

Genetic studies indicate that as many as one in 17 men living around Mediterranean may be descended from them 30/10/08 1:03 PM 10

New Honda device helps you walk42

Imagine a bicycle seat connected by mechanical frames to a pair of shoes for an idea of how it works 07/11/08 5:55 AM 42

'Out' challenges key for tennis pros2

Research finds that contesting 'out' calls more likely to result in favourable ruling than challenging 'in' calls 27/10/08 12:33 PM 2

New source of X-rays found51

Scotch tape being pulled off roll in vacuum makes image of researcher's fingers 22/10/08 1:05 PM 51

Cyber heart hopes to echo da Vinci

His sketches transformed understanding of human heart; scientists hope this new model can too 22/10/08 11:02 AM

Pigeon-sized dinosaur had feathers15

Discovery by archeologists in China indicates possible ancestor of birds 24/10/08 11:50 AM 15

Kangaroo's DNA mapped10

Scientists surprised at similarity of humans', marsupials' genomes 19/11/08 12:49 PM 10

Cloned hormone gives cows more milk10

Argentine growth hormone from genetically modified cows can boost production about 20 per cent, studies find; product banned in Canada, Japan, Australia and parts of Europe 06/11/08 12:21 PM 10

Decoded genome turns up new clues

Scientists identify eight mutated genes never before linked to one type of leukemia 06/11/08 12:37 PM

Ancient iceman's lineage likely extinct2

Otzi – 5,300-year-old body found in Alps – had rare genetic trait not found in modern humans 31/10/08 12:42 PM 2

Purple tomato fights cancer31

Genes that colour snapdragon introduced into tomatoes make them purple with anticancer benefits similar to dark berries 27/10/08 9:07 AM 31

Scientists talk; politicians listen10

Experts urging protection for Canada's boreal forest delighted by reception of proposal 19/11/08 12:15 PM 10

Separate Great Lakes, Mississippi, study urges17

Changes needed to stop exchange of invasive species that can cause irreversible damage, environmental group says 12/11/08 3:09 AM 17

U.S. government orders halt to CO₂ test35

Scientists upset as Department of Energy orders forest cut down to enable immediate sampling of data to make room for new projects 11/11/08 12:50 PM 35

Rock found that acts as carbon sink419

Mineral found mainly in Oman that absorbs CO2 at rate that could help slow global warming, scientists say 07/11/08 12:48 PM 419

From pond scum to desirable?3

High cost of fuel boosts research into use of algae as replacement 03/11/08 12:46 PM 3

Rare reptile nesting in New Zealand22

First evidence in 200 years proves tuatara – with lineage dating back to dinosaurs – reproducing, suggests more may exist 31/10/08 9:21 AM 22

Study links human activity to polar warming349

Researchers say climate models definitively prove the effect of CO2 emissions, but others still aren't convinced 31/10/08 5:17 AM 349

Boxing Day tsunami worst in 600 years18

Wall of water that crashed into South Asia coastlines in 2004 killed about 230,000 people, devastated region for years 29/10/08 2:07 PM 18

Rising CO₂ accelerates bleaching, study finds40

Previous calculations underestimate effect of greenhouse gases caused by humans 29/10/08 1:59 PM 40

Site shows humans as fire starters68

Ability to make fire 790,000 years ago enabled northward migration, study along Jordan River suggests 27/10/08 1:53 PM 68