How are sand dunes formed and why do they even exist?
11 November 2020
The strange, beautiful shapes that sand dunes form are a mystery. Now researchers are conducting huge desert experiments and using dune racetracks to figure it out
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Premium
Evolution explains why social distancing due to covid-19 is so hard
11 November 2020
Hugs, handshakes and air kisses serve the same crucial purposes as animal greetings like sniffing, eye poking and buttock grabbing
The population debate: Are there too many people on the planet?
11 November 2020
The world population is 7.7 billion. What do our growing numbers mean for economic security, climate change, environmental destruction and the likelihood of pandemics?
