Ivan Pavlov
While researching digestion in dogs, Ivan Pavlov noticed that the dogs began to drool as soon as they saw the white coats of the people who fed them; before they could even see or smell their food.
Claudius Ptolemy
Humans
Don鈥檛 miss: Renaissance investigations, social insights and space cops
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Humans
This Tank Man image from Tiananmen Square heralded a new digital age
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Physics
From the archives: How a cosmic illusion proved Einstein鈥檚 relativity
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午夜福利1000集合
Georgios Papanikolaou: inventor of the Pap smear cervical cancer test
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午夜福利1000集合
How Lucy Wills discovered a medical marvel in Marmite
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Earth
Underland is a profound journey into the mirror world of the dead
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Technology
How games like Assassin’s Creed give us a feel for history
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Space
From the archives: How do you get astronauts back from space?
50 years ago, the Apollo missions were gearing up to put a human on the moon 鈥� and NASA was in a spin about how best to get them safely home again
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Environment
Signs of human climate change influence on drought traced back to 1900
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Environment
Nazi sub is being destroyed by bacteria due to Deepwater Horizon spill
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Environment
From the archives: 1989, the warmest year on record
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Humans
Exclusive: DNA solves Rudolf Hess doppelg盲nger conspiracy theory
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