Chimpanzee brains do not suffer age-related brain shrinkage as humans do, indicating that old age has evolved to "pay for" our bigger brains.
Light's speed curbs time travel
Physicists show single photons cannot exceed the vacuum speed of light - meaning that the simplest form of time travel is impossible.
Crisis 'will not end nuclear age'
The UN's top nuclear official says the use of atomic power will continue to grow around the world, despite the crisis at Japan's Fukushima Daiichi plant.
Article written by Jonathan Amos
Jonathan Amos
Science correspondent
23:57 UK time, Thursday, 21 July 2011
The retirement of the space shuttle sees the human spaceflight baton handed to the commercial sector. But how big a market will there be for privately operated "astronaut taxis".
Article written by Richard Black
Richard Black
Environment correspondent
14:22 UK time, Monday, 25 July 2011
Environment groups go head-to-head on forest standards - but both help the greater cause.
Space shuttle
Reports, features and analysis of the space shuttle's final journey
Illegal animal trade thriving in UAE
Authorities in the UAE are struggling to control the numbers of endangered species smuggled into the country.
Stalled climate talks 'will impact' on health03:46
Boy inspired by home bee webcam01:35
Shuttle's final mission highlights04:42
Chernobyl exclusion zone scientists01:35
Branson: Space hotels not far off02:06
Inside Chile's giant telescopes03:36
A look inside a Russian Soyuz craft01:52
The dilemmas of reporting science05:34
No man's land
How Chernobyl's wildlife is faring 25 years after the nuclear disaster BBC Nature
The net closes
Could physicists be closing in on the sought-after Higgs particle?
Tree top tales
Allegations fly on green standards and greenwash
Holiday in Hell?
Nuclear plant in quake zone becomes tourist destination
Residents' brief visit to abandoned zone they used to call home
Guerilla gardeners take green to the Berlin streets From our own correspondent
Does weather really change beliefs on climate change?
Child's play
BBC Travel's kid-friendly outings amidst the crowds and chaos of Delhi
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Cows 'may offer greener fuel key'
New test for fake Scotch whisky
