Mountain melt shutters classic Alpine routes

Little snow cover and glaciers melting at an alarming rate amid Europe's sweltering heatwaves have put some of the most classic Alpine hiking routes off-limits.

When hippos roamed, past temperatures were much higher

Although Oxford's meteorological records go back 250 years, to before the French Revolution and even the American war of independence, scientists have gone back thousands of years to discover that our world has been much ...

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