BBC

In the middle of the 18th century, a large flightless bird became extinct on an Indian Ocean island.

Researchers develop a new speedy approach to estimate the true size of very large earthquakes.

A UK-Dutch-built Earth observing spacecraft shows its promise with some stunning images of pollution.

A plan for zero tolerance of plastic pollution of the oceans may be agreed by nations at a UN environment summit.

Sir Isaac Newton's papers and personal accounts are added to a Unesco register of globally important documents.

A collection of 200 eggs gives new insights into the development of the extinct flying reptiles.

Nasa releases footage captured over China, Korea and Japan of "lightning, city lights and fishing boats".

After digitising old weather data from atop Ben Nevis, citizen scientists tackle a much bigger project.

A bacterium made with "unnatural" DNA assembles proteins - a key characteristic of a functioning organism.

Archaeologists believe they may have uncovered the first evidence of Julius Caesar's invasion of Britain.

Prehistoric women's manual work was tougher than rowing in today's elite boat crews, say scientists.

A wildlife trust has asked people to get in touch if they spot the creatures.

Hunting animals with the biggest horns, tusks or manes could lead to extinction, according to a study.

The astrophysicist says at the time students weren't awarded Nobel Prizes.

Archaeologists say evidence indicates Caesar's invasion in 54BC began in Kent.

Confusion over food labels is prompting people to throw away usable produce, waste agency claims.

Coral is growing on the Great Barrier Reef after first being grown in tanks, say researchers.

Astronaut Randy Bresnik shares footage of a maintenance mission outside the International Space Station.

The latest trio has been introduced to Knapdale Forest in Argyll, Scotland.

One of the world's earliest urban civilisations thrived in the absence of a big Himalayan river, a new study finds.