Chimpanzees, in a test of their willingness to share with other chimps, displayed a surprising sense of fairness, scientists say, debunking the idea that only humans boast that quality.

The researchers said they are the first to show chimpanzees have a sense of fairness and that this may have evolved over time to aid their survival.

Australia's extreme summer heatwave, which caused devastating bushfires and saw temperature forecasts go off the scale, is part of a global warming trend, the U.N.'s climate panel chief said Tuesday.

As the 250 lead authors of the Intergovernmental Panel on Climate Change (IPCC)'s next major report meet in the southern Australian city of Hobart, the body's chairman Rajendra Pachauri said the link was clear.

Japanese scientists have successfully bred a type of salmon using surrogate parents of a different species, in a breakthrough that could help preserve endangered creatures, the chief researcher said Tuesday.

Researchers froze the testes of the yamame salmon, a fish indigenous to Japan that lives its entire life in rivers, before extracting primordial germ cells and implanting them into otherwise sterile rainbow trout hatchlings.

An Australian researcher who discovered a new species of flying frog near Ho Chi Minh City in Vietnam and named it after her mother said Tuesday it was a rare find so close to such a big city.

Helen's Flying Frog was first discovered by Jodi Rowley, an amphibian expert from Sydney's Australian Museum, in 2009 during a field trip to the forests fringing the city previously known as Saigon.

Spectacular lava flows and smoke from an active volcano on the Italian island of Stromboli on Monday sparked fear among inhabitants but geophysicists said the situation was under control.

Stromboli is part of the seven-island Eolian Archipelago just off Sicily in southern Italy.

Global warming has caused monthly records for heat to increase five-fold in frequency, according to a study by scientists in Germany and Spain, published on Monday.

In parts of Europe, Africa and southern Asia, the frequency of months with record-breaking heat has surged tenfold, it said.

Russia's struggling space agency has unveiled a new multi-billion-dollar plan that will see the development of a replacement for the ageing Soyuz rocket by 2020.

The $70-billion plan published over the weekend on the website of the Russian Space Agency (Roscosmos) also envisions the launch of new unmanned missions to the Moon and beyond.

Tens of millions of people may be spared droughts and floods by 2050 if Earth-warming carbon emissions peak in 2016 rather than 2030, scientists said on Sunday.

Climate researchers in Britain and Germany said emission cuts now would delay some crippling impacts by decades and prevent some altogether.

A new DNA test can restore at least part of the identity of long-dead people who left no trace of their image, scientists reported on Monday.

The technique has revealed the hair and eye colors of unknown individuals slaughtered as sub-humans by the Nazis and of a mystery woman buried alongside monks in a medieval crypt, they said.

Astronomers on Friday said they had observed the largest structure yet seen in the cosmos, a cluster of galaxies from the early Universe that spans an astonishing four billion light years.

The sprawling structure is known as a large quasar group (LQG), in which quasars -- the nuclei of ancient galaxies, powered by supermassive black holes -- clump together.