The space agency announces the companies that will work on landers to return astronauts to the Moon.

How the outside world can be good for body and mind - with expert tips on making the most of it.

Public transport usage won't recover to pre-Covid19 levels once the lockdown ends, a survey suggests.

Areas such as India, Australia and Africa are predicted to be among the worst affected.

How the global pandemic is limiting carbon emissions and what this will mean for climate change.

The Food and Drug Administration authorises emergency use of the experimental anti-viral drug.

Mediterranean sediments are shown to have up to 1.9 million tiny plastic pieces per square metre.

Native woodlands can resist the spread of invasive species if they block light reaching the ground.

Scientists say the microbe - found in the wild near Lake Victoria - has enormous potential.

Mink have caught Covid-19, adding to the list of infected animals, and prompting calls for trade bans.

Science instruments sense a big dip in seismic noise as the population stays at home.

Prof Neil Ferguson, who advised ministers on coronavirus, says he "made an error of judgement".

A study has identified a mutation that its authors say could make the coronavirus more infectious.

An unseen object is found to be lurking in a double-star system a mere 1,000 light-years from Earth.

Bicycle shops across the UK say demand for new bikes, and repairs for old ones, has risen sharply.

Key facts, figures and dates about West Africa's peacekeeping mission

A chronology of key events

A chronology of key events

A chronology of key events

A chronology of key events

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key facts, figures and dates

Key dates, facts and figures

Key facts, figures and dates

Key facts, figures and dates