SCIENCE

American children's cardiovascular fitness has dropped 6% every decade since 1970.

DNA shows early modern humans had sex with Neanderthals, Denisovans and 'mystery species'.

Global climate report highlights record CO2 emissions driven by China.

Canada outreach worker expecting more cases of krokodil use to surface in coming months.

Researchers find promiscuous female mice have sexier sons.

India planning to use birth control pills to tackle 'rhesus monkey menace' in New Delhi and other cities.

Comet Ison will catapult around the sun at speeds of up to 845,000mph.

Flights disrupted and thousands prevented from returning home after Mount Sinabung and Mount Merapi erupt.

Europe's most active volcano blows its top, but locals in no danger.

Hunter-gatherers in Europe were the first people to have pet dogs.

Government mulling locations of first UK space launch base with Wales believed to be a front runner.

Experts warn about dangers of cosmetic surgical procedures on genitals.

Scientists reveal what enigmatic cosmic jets are made of after decades of uncertainty.

Researchers develop microbicide they say prevents transmission of HIV.

Scientists predict ocean acidification will increase by as much as 170% by 2100.

Surgeons in Wales to use 3D technology to create titanium implants for facial reconstruction.

WWF capture first sighting of saola in the wild in the 21st century.

Toronto scientists prove radar invisibility cloak can be adapted to different sizes and types of object.

Oldest big cat fossil dating to five million years fills gap in evolutionary history.

World Health Organisation says disease spread from Pakistan into Egypt and on to Syria.

World Health Organisation says corpses do not pose health risk after Yolanda devastates central Philippines.

WHO says 64 people have died from Middle East respiratory syndrome coronavirus.

As many as 10,000 people are feared dead in one city alone after Super Typhoon Haiyan slammed into the central islands of the Philippines.

An unexplained sphere described by Nasa as 'weird and freakish' with shooting jets of matter was spotted in the solar system.

Vietnam braces up to face super typhoon Haiyan, as the country goes on high alert in the face of the massive storm.

Researchers find peptide in cow's milk is effective at killing stomach cancer.

Collapse of infrastructure in Syrian civil war has deadly implications for European populations.

P/2013 P5 was born 200 million years ago but has only just been captured by Pan-Starrs and Hubble Telescope.

As super storm Yolanda nears landfall, here are some essential tips to keep in mind.