The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
German chemists made a replica of a trophy the size of one molecule.
68
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The average temperature at 40,000 feet above sea level is -60 F.
56
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
One third of the electricity produced on earth is used to power electric light bulbs!
75
The smell of freshly cut grass is actually a plant distress call.
31
Aluminum used to be more valuable than gold!
84