Nature & Biology

Magnetic bacteria and their unique superpower attract researchers

Magnetic bacteria and their unique superpower attract researchers

As a graduate student in the 1970s, microbiologist Richard Blakemore probably wasn’t expecting to discover a new bacterial species with a never-before-seen ability. While studying bacteria that live in muddy swamps, he observed that some tended to swim reliably toward the same geographical direction. Even when he rotated the microscope, they persisted in wiggling toward one direction. After confirming that their swimming behaviors were unaffected by light, Blakemore suspected they might be responding to the weak magnetic fields naturally present on Earth.

How animals went from single cells to over 30 different body types

How animals went from single cells to over 30 different body types

Whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved. So wrote Charles Darwin, in his On the Origin of Species. The origin and evolution of animals is one of the most fascinating questions in modern biology.

Why the summer sound of noisy crickets is growing fainter

Why the summer sound of noisy crickets is growing fainter

To make this familiar summer sound, the male cricket holds his nerve and “stridulates” – rubbing his back legs together in order to entice a female. He knows this makes him vulnerable. What a female cricket can find, so too can the predators and parasites that wish to consume or infect him.

Whale sharks gather at a few specific locations around the world – now we know why

Whale sharks gather at a few specific locations around the world – now we know why

The whale shark is the largest fish in the world, but much of its life cycle remains shrouded in mystery. These gentle giants gather in just a handful of places around the globe – something which has long baffled scientists – but our new research has started to explain why. Better understanding of whale shark movements could help prevent further population loss in a species that has already experienced a 63% population decline over the past 75 years.

To avoid humans, more wildlife now work the night shift

To avoid humans, more wildlife now work the night shift

For their first 100 million years on planet Earth, our mammal ancestors relied on the cover of darkness to escape their dinosaur predators and competitors. Only after the meteor-induced mass extinction of dinosaurs66 million years ago could these nocturnal mammals explore the many wondrous opportunities available in the light of day.

Jurassic World: can we really resurrect a dinosaur?

Jurassic World: can we really resurrect a dinosaur?

This summer, the fifth installment of the Jurassic Park franchise will be on the big screen, reinforcing a love of dinosaurs that has been with many of us since childhood. There is something awe inspiring about the biggest, fiercest, and “deadest” creatures that have ever walked the planet. But the films have had an additional benefit – they have sparked an interest in dinosaur DNA.

Scientists are using DNA to study ocean life and reveal the hidden diversity of zooplankton

 Scientists are using DNA to study ocean life and reveal the hidden diversity of zooplankton

Marine zooplankton are tiny animals, roughly the size of insects you might see on a summer day, that drift with ocean currents. Many of them are lovely, but except for scientists who study them, few people are aware that they are among the most numerous – and important – animals on Earth.

A weird thing happened to men about 7,000 years ago

A weird thing happened to men about 7,000 years ago

Starting about 7,000 years ago, and extending over the next two millennia, recent studies suggest, the genetic diversity of men—specifically, the diversity of their Y chromosomes—collapsed. The collapse was so extreme it was as if there were only one man left to mate for every 17 women.

Predators That Used To Be Threatened Are Expanding Back Into Their Old Habitats

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