Michael Marshall

The answer to one of the biggest questions of all

The huge cave bears that once roamed Europe started to disappear just after modern humans arrived

A single-celled organism found off the coast of Japan could offer us a glimpse of one of our most distant ancestors

The world’s largest frog builds nests in streams, which seems to entail shifting rocks that weigh up to two kilograms

The Earth is a complex machine that works to support life – and humans have seized control of the machine, for better or worse

The Vikings weren’t all Nordic natives. They comprised multiple distinct groups of different peoples, according to a major study of ancient DNA

A valley longer than the Grand Canyon that is hidden under the Greenland ice sheet may carry flowing liquid water, according to a new analysis of the valley’s shape

A few species of jellyfish fertilise eggs internally, and their sperm come with tiny stingers that help them anchor to the tissue within the female gonads

Blobs of simple carbon-based compounds could have been the precursors to the first living cells

While plastic waste is a major problem, technologies and strategies already exist to fix it. The challenge is to scale them up and roll them out

The first person to be officially tasked with making Procter & Gamble’s many well-known brands more environmentally friendly is discovering that motivation begins at home

The climate may be more sensitive to greenhouse gases than we thought. That’s because in a warmer world high-altitude clouds may become thinner, causing them to reflect less sunlight back into space

Homo sapiens lived in Greece 210,000 years ago. The finding rewrites human prehistory, suggesting our ancestors migrated out of Africa – and reached Europe – earlier than we thought

Two billion people do not get enough micronutrients in their diets, which can lead to severe health conditions. New kinds of crops could help to create better, more nutritious foods to beat these deficiencies

An oversight in historical weather records means we have underestimated how much the climate warmed last century. The finding means we are 0.1°C closer to passing the internationally-agreed limit of 2°C than we thought