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The EU Research & Innovation Magazine
From slime mould to space junk, and Botox to cow burps, Horizon journalists covered a wide range of stories in 2015 - and learned some curious facts along the way. Here are our favourites.
1. Six months in space can make your body seem 20 years older.
2. Each teaspoon of soil contains more bacteria than there are people on the planet.
3. By physically stopping you frowning, Botox could reduce symptoms of depression.
4. Energy is able to travel down every route in a plant at once.
5. Since the early 1990s, astronomers have spotted nearly 2 000 planets outside our solar system.
6. Silk is the only material in the natural world that is spun, not grown.
7. There are 300 000 pieces of space junk larger than a EUR 1 coin in low-earth orbit.
8. A fully grown cow can release up to 500 litres of methane into the atmosphere each day.
To protect species, we need to speak the language of business, say experts. 
