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Tree planting pledges

Are the tree planting initiatives proposed by different UK political parties achievable?

• 9 mins

Koalas

Have bushfires destroyed 80% of the koala habitat in Australia?

• 9 mins

The Simpsons and maths

Exploring the maths secrets of The Simpsons.

• 9 mins

Presidential candidates and dementia

The health risks some of the frontrunners in the US presidential race face.

• 9 mins

C-sections and sharks

Hospital births in China and whether it鈥檚 true 50% are delivered by caesarean section

• 9 mins

Bushfire mystery

Have a billion animals died in Australia鈥檚 fires?

• 9 mins

Japan鈥檚 99% conviction rate

Quantifying justice in Japan

• 9 mins

Dozy science

How much sleep do we really need?

• 9 mins

Coronavirus

Fact checking claims about the spread of Coronavirus

• 9 mins

How fast are alligators and hippos?

Can alligators run at 50kmph? Join us in clocking alligators鈥� gaits

• 9 mins

Coronavirus: The numbers

An update on Covid-19 statistics, with Tim Harford

• 9 mins

Artificial (not so) Intelligence

Is the problem with AI its lack of intelligence?

• 9 mins

Netflix v the environment

Does watching 30 minutes of Netflix have the same carbon footprint as driving four miles?

• 9 mins

How much heat do you lose from your head?

Is it true that 40% of your body's heat loss comes from your head?

• 9 mins

The mystery of Iran鈥檚 coronavirus numbers

Does Iran have a lot more covid-19 cases that its figures suggest?

• 9 mins

Mitigation or suppression: What鈥檚 best to tackle coronavirus?

How statistical modelling can help us respond to the Coronavirus pandemic

• 9 mins

Covid-19: The risks

Professor Sir David Spiegelhalter puts the risks of Covid-19 into perspective

• 9 mins

Are more men dying from coronavirus?

Tim Harford and Ruth Alexander examine the statistics around the world.

• 9 mins

Should you wear a face mask?

Tim Harford looks at the debate over making your own Covid-19 protection.

• 9 mins

Superforecasting the Coronavirus

Can professional predictors help us understand the course of the coronavirus pandemic?

• 9 mins

Comparing countries' coronavirus performance

Is it helpful to ask which countries are faring better in tackling the coronavirus?

• 9 mins

Climate change and birdsong

With factories closed and flights grounded, what impact will this have on climate change?

• 9 mins

Covid-19 fatality rate

Why don't we know how dangerous Covid -19 really is?

• 9 mins

Social distancing and government borrowing

Where do the different social distancing measurements come from?

• 9 mins

60 Harvests and statistically savvy parrots

Can there really only be 60 harvests left in Earth's soil?

• 9 mins

Coronavirus baby boom and vitamin D

Are we going to have a coronavirus baby boom?

• 9 mins

Keep your distance

Tim Harford examines how can we avoid infection spreading, while getting on with life.

• 9 mins

Spanish coronavirus figures and pangolins

Are pangolins the most trafficked animal in the world?

• 9 mins

Who should be quarantined?

Tim Harford finds out which countries have the highest rate of Covid-19 infection.

• 9 mins

A new Covid-19 drug and a second wave

Tim Harford looks into why protests haven鈥檛 led to a spike in Covid-19 cases

• 9 mins