The humble guppy fish may be tiny in size but it's big in brain power according to new research. Male guppies living within close proximity of predators have been found to have bigger brains than those who don't. SABRINA WEISS reports
Our oceans act as a very effective carbon storehouse, absorbing about a third of CO2 emissions. This has led to an increase in the acidity of our seawaters - which is harmful to marine life. However, new research shows that seaweeds can influence the acidity of the water around them and in turn provide vital shelter for organisms at risk from higher pH levels. CATHERINE HARTE reports