Earth may have been covered by global ocean 3 bn yrs ago: Scientists

The findings could help understand how single-cell organisms first emerged on Earth, according to scientists  

Cyclones and climate change

Some climate models predict two- to seven- fold increase in the frequency of Hurricane Katrina magnitude events for a 1°C rise in global …

Glaciers in western Canada to lose 70 per cent volume by 2100: study

Runoff from the melting ice will peak between 2020 and 2040

Mercury’s dark surface a result of comet dust

A report says the planet’s surface was painted black by passing comets over billions of years

Six strategies to reduce water scarcity by 2050

Improved irrigation techniques, better cultivars, checking population growth rate are among measures that can help lower water demand, says study