British Butterfly adapts to climate change by migrating north, changing diet
Study finds newly adapted butterflies lost ability to feed on food in their original habitat
Delhi's pavement dwellers choking on city air
Study of unclaimed bodies by AIIMS doctors shows large number of homeless are dying of lung and heart diseases
Climate change may lead to improved oxygen levels in oceans, says study
Tropical Pacific winds may be aiding oxygenation, suggest researchers
