TODAY:  18:00 29 January 2014

Geological records show that rotating storm systems in Australia are becoming rarer – but those that do occur will be far more severe, models predict

TODAY:  21:55 28 January 2014

California's extreme drought could become the new norm as the climate warms, leaving engineers scrambling to develop new ways to slake the state's thirst

TODAY:  17:11 28 January 2014

Asian elephants menacing the Hassan district of Karnataka are being rounded up but opinion is divided over whether it is best to train or relocate them

TODAY:  16:41 28 January 2014

We risk destroying an area of land the size of Brazil by 2050 – but the answer is not smarter food production, but less waste

TODAY:  18:00 26 January 2014

New measurements date Arizona's vast canyon to 6 million years ago, not 70 million years as has been suggested

PICTURE OF THE DAY:  16:47 23 January 2014

Forget smoke on the water – this is vog on the sunglint as a volcano's smoky fumes are captured in a stunning image from space

THIS WEEK:  11:53 23 January 2014

The mammal communities found today in the Altai-Sayan mountains are remarkably similar to those that existed across Eurasia in the last ice age

TODAY:  17:24 22 January 2014

Europe has proposed fresh targets for cutting its greenhouse gas emissions between now and 2030, but it is unclear how they will be enforced

TODAY:  12:42 22 January 2014

Coal burning is at a 20-year high and subsidies for renewable energy are about to be slashed – yet Germany swears it will cut greenhouse gas emissions

TODAY:  14:01 21 January 2014

The US has outsourced many of its production lines to China and, in return, global winds are exporting the Chinese factories' pollution right back to the US

APERTURE:  12:00 21 January 2014

Densely populated Hong Kong has the most skyscrapers of any city in the world. Photojournalist Michael Wolf shows them in a different light

INTERVIEW:  09:00 21 January 2014

Violent unrest in the Central African Republic is the latest blow to efforts to save the region's forest elephants, says biologist Andrea Turkalo

FEATURE:  14:00 20 January 2014

In the year 536 the sun dimmed and the world shivered, leading to famine, plague and the fall of empires. New clues point to an double-whammy apocalypse

COMMENT:  08:00 20 January 2014

Oil-palm cultivation has wrecked habitats in South-East Asia. We must avoid a rerun if the crop takes off in its native Africa, says Curtis Abraham

TODAY:  18:00 19 January 2014

Extreme El Niño events that could kill tens of thousands of people will become twice as common because of climate change

TODAY:  18:26 17 January 2014

A 45,000-square-kilometre lake, which has long since dried up, was at the right place at the right time for key migrations in the history of our species

TODAY:  18:16 17 January 2014

More than 1000 rhinos were poached in South Africa last year – at this rate deaths could soon outnumber births, threatening a population crash