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Male cockroaches that have frequent sex eat more protein

This is most likely because they need protein to produce new sperm and a nuptial gift packed with nutrients that the female can pass on to her unborn young.

Mass extinction 66 million years ago paved the way for modern shark communities

The famous mass extinction of dinosaurs also impacted oceanic animals and in particular, sharks. A new study reveals how the balance of modern shark biodiversity can be traced back to this very event.

The truth is in the sediments

OPINION: The seafloor has different patterns on top than underneath the surface. Researchers at Nord University suggest that new seafloor research in the Lofoten-Vesterålen region contributes to future marine management.

Humans have always caused plant and animal extinctions

Our warming planet is pushing some plant and animals species towards extinction. But there’s actually no such thing as untouched nature — humans have always altered their environment. That doesn’t mean we shouldn’t do our best to protect what’s here now.

Unpublished Egyptian texts reveal new insights into ancient medicine

The large collection of documents from Ancient Egypt are held in Copenhagen and are revealing new details about medical sciences in antiquity.

How Ouija boards really work

“Impressive” study reveals what is actually happening when a supposed spirit communicates via a Ouija board.

Why are some animals venomous?

Some animals, such as venomous snakes and insects, can use venom for predation or defense, which is an ability that has been developed through millions of years. And the evolution continues – partly due to an increasing pressure from humans.

Scientists conduct most precise measurements of antihydrogen to date

New results show that matter and antimatter interact with light in precisely the same way.

See where Greenland harbour porpoises travel

These tough small whales use large parts of the North Atlantic, swimming much further offshore and diving far deeper than previously expected.

Scandinavian bumblebees survive by incubating their eggs

Bumblebee queens look for an abandoned, well-insulated mouse nest to start a family, where temperatures can be 15 degrees warmer than outside.

Concern for global warming is not a new craze

It is 80 years since the first calculations showed that the Earth was warming due to rising greenhouse gas emissions.

Why do trees sleep badly?

Scientists from Denmark and Hungary have studied the circadian rhythms of trees and discovered that many of them are poor sleepers. But why is this so?