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Two types of bacteria damage DNA and may help cause bowel cancer

7 February 2018

Evidence is growing that bacteria can cause bowel cancer. Now two common species have been found to cause DNA damage, and have been linked to tumours in mice

Push me, Pull You

7 February 2018

Does it require more or less effort to push a loaded wheelbarrow over hard level ground than to turn around and pull it? What about when the ground is soft?

Dazzle Hassle?

7 February 2018

Are the bright lights that cyclists now use safe for the eyes of onlookers?

Shadow of a doubt

7 February 2018

Sitting outside with my back to the sun, I noticed that the shadow cast by each clear lens of my glasses was equally as dark as that cast by the frame and my head. Why? Surely the clear lens would let the light through rather than casting a shadow?

Running battle

7 February 2018

Runners have long debated the difference between training on a treadmill and training on solid ground. "Belt turnover" is commonly cited as a factor that helps to move your foot backwards and thereby makes running on a treadmill easier than running on...

Feedback: Botoxed camels disqualified from Saudi beauty contest

7 February 2018

Plus: why a robot named Fabio was fired from its job, why old £1 coins are worth more than new ones, a new unit of time, drugs in videogames, and more

Crossword #15

7 February 2018

Compiled by Richard Smyth

What is our place in the natural world?

7 February 2018

A new exhibition, Mark Dion: Theatre of the natural world, sets out to explore the impact of our scientific endeavours. Plus, our rundown of the top upcoming events.