Researchers have assumed that natural selection drove frogs to take the evolutionary step to reproduce on land as a way for parents to avoid aquatic predators who feed on the eggs and tadpoles. A new study by a team including Cornell University frog biologists shows for the first time that some frogs hide eggs on land to reduce competition from other males who also want to fertilize those eggs.
Yellow fever virus (YFV), a close relative of Zika virus and transmitted by the same type of mosquito, is the cause of an often-fatal viral hemorrhagic fever and could spread via air travel from endemic areas in Africa to cause international epidemics.
Over the course of the 20th century, genes began to play a greater role in the height and body mass index (BMI) of Americans, while their significance decreased in educational outcomes and occurrence of heart disease.
A new study suggests that improvements in air quality over the Potomac watershed, including the Washington, D.C., metro area, may be responsible for recent progress on water quality in the Chesapeake Bay. Scientists from the University of Maryland Center for Environmental Science have linked improving water quality in streams and rivers of the Upper Potomac River Basin to reductions in nitrogen pollution onto the land and streams due to enforcement of the Clean Air Act.
The short-term risk of developing cardiovascular disease following a first pregnancy is higher for women experiencing placental syndromes and poor pregnancy outcomes, a University of South Florida study reports. The USF researchers also found a five-fold increase in health care costs for women with placental syndromes who developed cardiovascular disease as soon as three to five years following delivery, compared to those who did not.
University of Missouri researchers have created a new statistical model that accurately predicts tree growth from when they are first planted until they reach crown closure.
A Yale research team has designed a system to modify, or edit, multiple genes in the genome simultaneously, while also minimizing unintended effects. The gene-editing 'toolbox' provides a user-friendly solution that scientists can apply to research on cancer and other disciplines, the researchers said.
Cornell University biological engineers have deciphered the cellular strategy to make the biofuel ethanol, using an anaerobic microbe feeding on carbon monoxide -- a common industrial waste gas.
A team of engineers at Washington University in St. Louis has found a way to use graphene oxide sheets to transform dirty water into drinking water, and it could be a global game-changer.
NSU researcher collaborated with colleague to study the sexual organ of male barnacles -- a creature that has been studied dating back to Charles Darwin.