Rajkumar Sukumaran

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The damage wrought by acidic oceans hurts more than marine life and lasts longer than you think

A milky white cloud blooms in the Barents Sea, so vast it can be seen from space.<p>It's not the result of some toxic chemical spill or the sinking of a dairy-filled tanker — it's the handiwork of millions of microscopic algae, doing what their kind have done for millions of years.<p>The algae, <i>Emiliania</i> …

Oceans won’t have enough oxygen in as little as 15 years

<i>This story was originally published by Huffington Post and is reproduced here as part of the Climate Desk collaboration.</i><p>It should come as no surprise …

Humans changed a life-giving nutrient into a deadly pollutant

Nitrogen is absolutely crucial to life — an indispensable ingredient of DNA, proteins and essentially all living tissue — yet it also can choke the life out of aquatic ecosystems, destroy trees and sicken people when it shows up in excess at the wrong place, at the wrong time, in the wrong form. …

Pluto comes in to focus: a history of the dwarf planet – in pictures

As Nasa releases New Horizons’ latest photographs of Pluto, we take a look at images of the planet over the years – from its discovery in 1930 to the present day

Solar System

Answer to a 150-Year-Old Math Conundrum Brings More Mystery

In 1850, the Reverend Thomas Kirkman, rector of the parish of Croft-with-Southworth in Lancashire, England, posed an innocent-looking puzzle in the</i> …

South America

Largest-ever meteorite crater found in Australian outback

Scientists say underground 'scars' in central Australia mark the largest meteorite crater ever found<p>Scientists have discovered two deep scars in the earth's crust in outback Australia that are believed to mark the remains of a <b>meteorite crater</b> with a 250-mile diameter – the largest ever found.<p>The …