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Displaying 1951 - 1975 of 6520 articles

Researchers May Nango, Djaykuk Djandjomerr and S. Anna Florin collecting plants in Kakadu National Park. Reproduced with permission of Gundjeihmi Aboriginal Corporation. Elspeth Hayes

65,000-year-old plant remains show the earliest Australians spent plenty of time cooking

Charred plant remains from one of the oldest archaeological sites reveal that the first Australians ate a varied - and sometimes labour-intensive - diet.
Could graphene - shown here as an illustration of its molecular structure - come to define the next phase of the information revolution? Rost9/Shutterstock

Small world: atom-scale materials are the next tech frontier

Since the 1960s, silicon ‘nanomaterials’ have driven the information revolution. But as their potential is exhausted, is it time for ‘atomaterials’ such as graphene to drive innovation still further?
Unlike Earth’s atmosphere, Jupiter’s ‘sky’ hosts magnificent shades of orange, white, brown and blue. NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstädt

Curious Kids: is the sky blue on other planets?

Atmospheres can be all different colours, depending on what’s in them.
A white dward (centre) and its companion pulsar make for an excellent natural gravitational laboratory. Mark Myers/OzGrav

Warp factor: we’ve observed a spinning star that drags the very fabric of space and time

One of Einstein’s weirder predictions is that massive, spinning objects exert a drag on space-time itself. Now an orbiting pair of unusual stars has revealed this effect in action.
Neanderthal hunting grounds in southern Siberia — the Charysh River valley, with Chagyrskaya Cave in the centre of the photo. Institute of Archaeology and Ethnography of the Siberian Branch of the Russian Academy of Sciences

Stone tools reveal epic trek of nomadic Neanderthals

Neanderthals living in a cave in southern Siberia made distinctive stone tools that can be traced to their ancestral homeland in eastern Europe — an intercontinental journey of more than 3,000 km.
The male bluehead wrasse defends his group of yellow females, one of whom has to step-up and take charge if he leaves. Kevin Bryant

What we learn from a fish that can change sex in just 10 days

When a male bluehead wrasse is removed from the group he dominates, the largest female changes sex, rapidly transforming ovaries into sperm-producing testes. Molecular research shows how.