Ruth Dickens

Science

Nitrate chemicals pollute rocks

Eutrophication is a serious threat to water ecosystems; excess nutrients, such as nitrates, cause algal blooms which kill all plants and fish in an area. Changes to agricultural practice have reduced this type of pollution from fertilisers. However, recent surveys have found a large source of nitrates within rocks, threatening to seep into underground water…

Science

Meet the Gastronauts

“It’s good to eat your bogeys!” To the horror of parents, BBC Gastronaut Stefan Gates in his talk on Sunday for the Norwich Science Festival, assures a crowd of delighted children that eating your own bogeys is actually good for your health. Dressed in his ‘I’m Revolting’ t-shirt, Stefan used a range of unique and…

Science

Saturn moon storm

Titan, the largest of Saturn’s 60 moons, is a glacial, -180°C rock orbiting 1.4 billion km from Earth, where methane replaces water in its lakes and rivers. NASA’s Cassini spacecraft took almost seven years to reach it, and after its 13 year mission was decommissioned in 2017. Computer models using from this spacecraft have given…