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Science, Wildlife

Cuttlefish go light on lunch when there’s shrimp for dinner

A team of scientists led by the University of Cambridge has found that when cuttlefish know they’re getting shrimp for dinner, they’ll only have a light lunch of crabs. This ability to anticipate their favourite food is an indication of the cephalopod’s complex brain and cognitive abilities — via New Atlas

Science
SLAC National Accelerator Laboratory

Rust offers a cheap way to filter arsenic-poisoned water

When water flows deep underground, it often dissolves inorganic substances from mineral deposits in the earth’s crust. In many regions, these deposits contain arsenic, a naturally occurring element that is colourless, tasteless and odourless. Although its presence is barely noticeable, prolonged exposure to arsenic-contaminated water can lead to gangrene, disease and many types of cancer, resulting in major loss of income for millions of people and even death.

Inspired by natural processes in soil that bind contaminants and filter them out, Case van Genuchten, a researcher in the Geochemistry Department of the Geological Survey of Denmark and Greenland, has been using iron oxides such as rust, which are abundant in soil, to filter out arsenic from groundwater. He leads experiments at the Department of Energy’s SLAC National Accelerator Laboratory that investigate low-cost methods of treating groundwater using only small amounts of electricity and steel or iron. The team’s most recent paper, which compares the arsenic-removing performance of different forms of rust has been published in Water Research — via Phys.org

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World
Getty Images: Mike Hoare, seen here with his bodyguard in 1964, was internationally renowned until his career ended in an embarrassing anti-climax

Obituary: Mike Hoare

Michael Mad Mike Hoare, widely considered the world’s best known mercenary, has died aged 100.

Born in India to Irish parents, he led campaigns in the Congo in the 1960s that earned him fame at the time, and a controversial legacy years later.

His career reached an embarrassing end in 1981, when he was jailed for leading a failed coup in the Seychelles.

Mr Hoare’s son, Chris Hoare, said in a statement that his father died in a care facility in Durban, South Africa.

Mike Hoare lived by the philosophy that you get more out of life by living dangerously, so it is all the more remarkable that he lived more than 100 years, he said — via BBC News

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