Researchers at Oxford University have spent the past year assembling a database of every available COVID-19 policy on earth, from school closures to stay at home orders, contact tracing systems and vaccine rollouts. Their findings show that no country was predestined to do well or poorly when it comes to coronavirus – no matter if they were democracies or autocracies, rich or poor, or run by populists or technocrats. And in the years ahead, we’ll only truly recover from this pandemic if countries start working together.

When we think of wildfires, we tend to think of Australia, California or southern Europe. But as the climate changes, the UK could be in danger of burning too. A team of climate researchers has built a model to predict how bad things could get in the years to come.

And scientists are trying to redefine precisely how long a second is using ultrafast lasers. If they succeed, they could help us detect gravitational waves.

Megan Clement

Commissioning Editor, COVID-19

Senegal has kept cases low and the economy running. Catherine Leblond/Alamy Stock Image

What we learned from tracking every COVID policy in the world

Thomas Hale, University of Oxford

For one year, 600 people tracked 20 types of coronavirus restriction in 186 countries – here's what they found out.

A wildfire rages near Inverness in the Scottish Highlands. Reuben Tabner / Alamy

Wildfires: we calculated how climate change will increase danger in the UK

Nigel Arnell, University of Reading

Most fires are started by humans, but warmer and drier summers will mean a small spark will more easily turn into a serious fire.

Measuring time. Shutterstock/FlashMovie

Scientists are hoping to redefine the second – here’s why

Ben Murdin, University of Surrey

New research has tested the latest generation of atomic clocks.

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