Science/Nature

Sumatran rhino 'hanging on by a thread'

Image copyright Tom Uhlman Image caption Ipuh at the Cincinnati Zoo Scientists have decoded the genome of the Sumatran rhinoceros – one of the most threatened mammals on Earth. Its genetic blueprint shows that populations have been in decline for a very long time. The rhino’s troubles began during the last Ice Age, when its […]

Science/Nature

Star system has record eight exoplanets

Image copyright NASA Image caption Artwork: the Kepler-90 system is the first to tie with our Solar System in number of planets Nasa has found a distant star circled by eight planets, equal to the complement in our own Solar System. It’s the largest number of worlds ever discovered in a planetary system outside our […]

Science/Nature

Hurricane Harvey rainfall 'weighed 127bn tonnes'

Media playback is unsupported on your device Media captionRoads turned to rivers across Houston as Harvey hit Scientists have weighed the water that fell on Texas during the record-breaking Hurricane Harvey in August. They calculate, by measuring how much the Earth was compressed, that the Category 4 storm dropped 127 billion tonnes, or 34 trillion […]

Science/Nature

How Greenland would look without its ice sheet

Media playback is unsupported on your device Media captionThe map reveals a hidden world of mountains and canyons Scientists have produced a stunning visualisation of Greenland – without its ice cover. It is made from decades of survey data that show the position and shape of the territory’s bedrock, and the surrounding seafloor. This is […]

Science/Nature

Warmer Arctic is the 'new normal'

Image caption Sea ice that is more than four years old has largely disappeared in the Arctic A warming, rapidly changing Arctic is the “new normal” and shows no signs of returning to the reliably frozen region of the past. This is according to the US National Oceanic and Atmospheric Administration’s Arctic Report Card. Director […]

Science/Nature

Nasa's New Horizons probe strikes distant gold

Image copyright NASA Image caption Artwork: The moonlet may be about 200-300km from the main object The American space agency’s New Horizons mission has struck gold again. After its astonishing flyby of Pluto in 2015, scientists have just discovered that the probe’s next target is not one object but very likely two. Earth-based observations suggest […]

Science/Nature

Jupiter Great Red Spot has deep roots

Media playback is unsupported on your device Media captionA visualisation shows what it would be like to dive into Jupiter’s atmosphere. Scientists are beginning to unlock the secrets of the Great Red Spot on Jupiter – the biggest storm in the solar system. This spectacular anticyclone has been in existence for more than 150 years. […]

Science/Nature

'Face of climate change'?

Image copyright Caters News Image caption Campaigners filmed the starving bear searching for food It is harrowing footage. An emaciated polar bear searches for food on Baffin Island, north-eastern Canada. Exhausted, it drags one leg slowly behind it, eventually trying to eat some discarded seating foam among rubbish humans have left. Polar bears hunt from […]