The Sierra Madre Oriental is part of a chain that stretches across three continents.

A new study led by researchers at UC San Francisco has found that among older Americans with cognitive impairment, the greater the air pollution in their neighborhood, the higher the likelihood of amyloid plaques – a hallmark of Alzheimer’s disease. 

In a ground-breaking new study, scientists used innovative molecular techniques to explain how corals on the east coast of Australia survived previous tough conditions—enabling the Great Barrier Reef to become the vast reef it is today.

As temperatures rise due to climate change, the melting of polar ice sheets is accelerating. 

Under the worst-case scenarios laid out in the United Nations’ climate change projections, global temperatures would increase more than 3.6 degrees Fahrenheit (2 degrees Celsius) by 2100, leading to at least 1.5 feet (0.5 meters) in global sea level rise and an array of disastrous consequences for people and planet. 

Results of a new five-year study of recycled concrete show that it performs as well, and in several cases even better, than conventional concrete.

Scientists soaked various plastic samples in seawater then removed the plastic and raised sea urchin embryos in the water.

The thousands of pictures are among the oldest depictions of people interacting with the huge creatures, including mastodons. Usually the only clues about their appearance are skeletal remains.

The algae, known as peyssonnelid algal crusts (PAC), are taking over the reefs at such an aggressive rate that they are interfering with the ability of coral larvae to find places to settle on the reefs, and interfering with the reef’s natural ecosystem.

A new QUT-led study has found wild jaguars in the Amazon can cope with climate extremes in the short-term, but numbers will rapidly decline if weather events increase in frequency, diminishing sources of food.