Most workers have little flexibility in their day

6 February 2019

First class post – 9 February 2019

6 February 2019

My own personal exercise paradox

6 February 2019

Editor's pick: To spot cleanliness, you must look properly

6 February 2019

Orchids at Kew Gardens review – celebrating the colour of Colombia

6 February 2019

As home to an amazing 4200 orchid species, Colombia is the perfect choice to fuel an orchid festival at Kew Gardens in London – and turn it into a carnival

Don’t miss: Exploring your own delusions, playing with evolution

6 February 2019

Find out why You Are Not So Smart on the podcast of the same name, get ready to play Evolution the video game, plus more of this week's cultural picks

The baffling quantum maths solution it took 10 years to understand

6 February 2019

A decade ago, two mathematicians produced a solution to one of the most difficult maths problems ever. The only problem was, no one understood it - until now

Mother sloth bear carrying babies takes on a big male tiger and wins

6 February 2019

Claws were out and roars filled the air as a sloth bear had a face-off with a tiger in the northern Indian state of Rajasthan. The bear emerged victorious

How Earth's changing ecosystems may have driven human evolution

6 February 2019

The most detailed ever look at Earth's prehistoric climate suggests many habitats changed in the past 800,000 years – and this may be why we evolved big brains

Cosy up with the Neanderthals, the first humans to make a house a home

6 February 2019

Meet the Stone Age people who liked nothing better than spending time indoors around the fire, doing a spot of DIY and having friends over for dinner