Australia's unique duck-billed platypus -- an egg-laying, furry animal with web feet that spends most of its time underwater -- is in fact part bird, part reptile and part mammal according to its gene map.

A team of international scientists released the platypus genome on Thursday, saying its complex sequence would aid the study of human evolution -- particularly the development of the immune, nervous and reproductive systems.

Turn greenhouse gases to stone? Transform them into a treacle-like liquid deep under the seabed?

The ideas may sound like far-fetched schemes from an alchemist's notebook but scientists are pursuing them as many countries prepare to bury captured greenhouse gases in coming years as part of the fight against global warming.

Add university research to the long list of human activities contributing to global warming.

Hervé Philippe, a Université de Montréal professor of biochemistry, is a committed environmentalist who found that his own research produces 44 tonnes of CO2 per year. The average American citizen produces 20 tonnes.

This summer's Beijing Olympics will be "basically" carbon neutral thanks to a series of energy saving measures such as the use of solar power and an afforestation program, a senior official said on Thursday.

Technology Minister Wan Gang said that the event was expected to generate 1.18 million tonnes of carbon, in part because so many athletes and spectators were traveling long distances.