China’s list of achievements in space seems to be growing at warp speed. Two years ago, it became the first country to land on the far side of the Moon. Since then, it has safely brought back the first samples of lunar rocks to Earth since the 1970s, and managed the notoriously difficult task of landing a rover on Mars.

Now Chinese astronauts have completed the country’s first ever spacewalk, an event that took place at its new space station Tiangong. The three astronauts, who reached the station on 17 June, are now busy working on the orbiter and preparing it for future crews. Yet while Tiangong may end up becoming the only functioning human outpost in space once the International Space Station gets decommissioned, there are signs that the country is looking to collaborate on it with other countries.

Back on Earth, researchers from several different countries have solved a longstanding problem in biology: why some fish are warmblooded. And it turns out that people in suburbs have a bigger carbon footprint than those living in cities or the countryside.

Miriam Frankel

Science Editor

Chinese astronauts Tang Hongbo, Nie Haisheng, and Liu Boming during ceremony before heading to Tiangong. ROMAN PILIPEY/EPA

Tiangong: astronauts are working on China’s new space station – here’s what to expect

Gareth Dorrian, University of Birmingham; Ian Whittaker, Nottingham Trent University

China's space programme is going from strength to strength.

Some sharks are warm-blooded. Diego Camejo

We solved the mystery of why some fish are warm-blooded

Lucy Harding, Trinity College Dublin

Warm-blooded fish can swim 1.6 times faster than their cold-blooded relatives.

Jandrie Lombard/Shutterstock

Suburban living the worst for carbon emissions – new research

Sabrina Zwick, United Nations University

New research indicates that people in urban areas, on average, have the smallest carbon footprints, and those living in the suburbs the highest.

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