Life exploded on Earth after slow rise of oxygen

It took 100 million years for oxygen levels in the oceans and atmosphere to increase to the level that allowed the explosion of animal life on Earth about 600 million years ago, according to a UCL-led study funded by the ...

Stressed out plants send animal-like signals

University of Adelaide research has shown for the first time that, despite not having a nervous system, plants use signals normally associated with animals when they encounter stress.

DNA which only females have

In many animal species, the chromosomes differ between the sexes. The male has a Y chromosome. In some animals, however, for example birds, it is the other way round. In birds, the females have their own sex chromosome, the ...

Trophy hunting may be a key to saving wildlife

The world may need to allow controlled trophy hunting of elephants, lions and other animals if it wants to keep its endangered wildlife, an environmental scientist says.

Seabed study shows inhabitants' diversity

The tiny creatures that live in seabed sediments are far more genetically varied than we thought – and they're spread around the oceans according to similar rules to those governing the distribution of bigger plants and ...

Big changes in the Sargasso Sea

Over one thousand miles wide and three thousand miles long, the Sargasso Sea occupies almost two thirds of the North Atlantic Ocean. Within the sea, circling ocean currents accumulate mats of Sargassum seaweed that shelter ...

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