Greening for good?

Global warming increases vegetation cover in the Northern Hemisphere

Heat traps

Aerosols trap heat and increase temperatures

Sink or elevator?

New evidence shows some plantations could actually increase global warming

Weighty task

It is not easy to measure nitrous oxide, a greenhouse gas, emitted from Indian farms

Viral flight

Bird flu reported among wild migratory birds in China

Heavy metals, light target

A floating plant shows Kolkata wetlands are turning toxic

Deep distress

Power corrupts

Coal-based power plants caus haze over Indo-Gangetic plains

Scoring pesticides

Alien cargo

A ship's ballast water is a serious threat to marine ecosystems

Countering El Nio

A call for an international front against the naughty child

Killing corn

Exaggerated efficiency

The benefit of transferring technologies under the Kyoto Protocol's mechanisms is questionable

Logjam ban!

Logging bans fail to rectify the fundamental causes of deforestation

Modified dangers

Bt maize can stunt the growth of caterpillars

Parking poison

Coal-based plants spew mercury

Equally good

Wild and kicking

One place in India where wild animals prosper

What's cooking?

Biofuels can trigger climate change, claims study; Indian scientists sceptical

Separately purified urine is environment friendly

Study favours separate collection and treatment of urine

Wetland crisis

Industrial activity threatens the wetlands of east Calcutta

Dangerous mines

Burying of waste by the mining industry can severely damage plant and animal life

Pesticide endangers fish

Koi decimated, claims study

Pesticide fatigue

Makes the busy bee a lazy pollinator

Getting the tan right

Removing chromium from effluent of leather units