Supercontinents have formed and broken apart throughout the geological history of Earth (see Rodinia) and about 300 million years ago, the Pangaea supercontinent was cobbled together.

While we generally attribute some instances of animal and plants existence in isolated areas to splitting continents, researchers in a new paper have instead linked Pangaea being formed to the largest mass extinction known, the Permian extinction, when up to 95% of species, 82% of genera and over 50% of families became extinct.

A research study headed by Victoria Leavitt, Ph.D. and James Sumowski, Ph.D., of Kessler Foundation, provides the first evidence for beneficial effects of aerobic exercise.

Hippocampal atrophy seen in MS is linked to the memory deficits that affect approximately 50% of individuals with MS. Despite the prevalence of this disabling symptom, there are no effective pharmacological or behavioral treatments. 

Many people know about ultrasound because of its popularity in prenatal imaging - grainy, grey outlines of babies made using reflected sound waves. A new 'acoustic diode' could dramatically improve future ultrasound images by changing the way those sound waves are transmitted.

A new paper in Cell Reports finds that it doesn't take a lot of genetic changes to spur the evolution of new species—even if the original populations are still in contact and exchanging genes.

Once evolutionary divergence happens, though, it evolves rapidly, ultimately leading to fully genetically isolated species.

To reveal genetic differences critical for speciation,the researchers analyzed the genomes of two closely related butterfly species, Heliconius cydno and H. pachinus, which only recently diverged. Occupying similar ecological habitats and able to interbreed, these butterfly species still undergo a small amount of genetic exchange.

A new paper says that people who are aware of their own thoughts and emotions - mindful  - show less neural response to positive feedback than their less mindful peers. 

That means they are typically less impulsive.

Trait mindfulness is characterized by an ability to recognize and accept one's thoughts and emotions without judgment. Mindful individuals are much better at letting their feelings and thoughts go rather than getting carried away.

The world's best supercomputers are staggeringly inefficient and energy-intensive machines and the human brain is staggering in its own right; putting a brain's information into CDs would require a skyscraper full of them and, unlike MP3s, there is no way to just create a compression algorithm.

The 86 billion neurons in our brains are connected by synapses that not only complete myriad logic circuits, they also they continuously adapt to stimuli, strengthening some connections while weakening others. We call that process learning and its rapid, highly efficient computational processes can't be matched.