How more than 1,000 tree species may occur in a small area of forest in Amazonia or Borneo is an unsolved mystery. Their ability to co-exist may depend on how trees get along with their neighbors. A new study based, in part, on data from the Smithsonian's Forest Global Earth Observatory (ForestGEO) network shows that trees worldwide compete in some of the same ways, making simpler models of forest response to climate change possible.

DENVER (January 7, 2016) Dinosaurs engaged in mating behavior similar to modern birds, leaving the fossil evidence behind in 100 million year old rocks, according to new research by Martin Lockley, professor of geology at the University of Colorado Denver.

Lockley, a paleontologist, led an international research team that discovered large 'scrapes' in the prehistoric Dakota sandstone of western Colorado. These ancient scrapes are similar to a behavior known as 'nest scrape display' or 'scrape ceremonies' among modern birds, where males show off their ability to provide by excavating pseudo nests for potential mates.

James Cook University researchers have found sex sells when it comes to luring male mosquitoes.

Senior Research Officer Brian Johnson and Professor Scott Ritchie set out to make a cheap and effective audio lure for scientists collecting male Aedes aegypti mosquitoes -- the species that carries dengue and yellow fever.

They found a tone of precisely 484 Hertz, the frequency of a female Aedes aegypti's wings, brought 95 percent of male mosquitoes to the trap.

Mr Johnson said the device cost around $20 and could be run by itself for weeks. "We started with a cheap mobile phone and moved to an even cheaper MP3 player. There are no harmonics, it's a pure tone and very simple to produce."

Everyone has at least a few non-negotiable values. These are the things that, no matter what the circumstance, you'd never compromise for any reason - such as "I'd never hurt a child," or "I'm against the death penalty."

Real-time brain scans show that when people read stories that deal with these core, protected values, the "default mode network" in their brains activates.

This network was once thought of as just the brain's autopilot, since it has been shown to be active when you're not engaged by anything in the outside world - but studies like this one suggest that it's actually working to find meaning in the narratives.

When you have a fever, your nose is stuffed and your headache is spreading to your toes, your body is telling you to stay home in bed. Feeling sick is an evolutionary adaptation according to a hypothesis put forward by Prof. Guy Shakhar of the Weizmann Institute's Immunology Department and Dr. Keren Shakhar of the Psychology Department of the College of Management Academic Studies, in a recent paper published in PLoS Biology.

In 2009, there was concern that American health care costs were too high. Since the advent of the Affordable Care Act, there is now concern that costs are really too high, only it is not rich doctors and insurance companies being vilified, it is defensive medicine and doctors being willing to sign off on unnecessary things to keep patients happy which, along with lawsuits, was the problem the whole time.

A study in the American Journal of Managed Care finds that more than half of primary care providers reported that they made what they considered unnecessary referrals to a specialist because patients wanted it and many physicians gave into patient requests for brand-name drugs when cheaper generics were available.

While expanding a reservoir in Snowmass Village, Colorado, construction workers stumbled upon a big bone. And then another, and another, and another. 

Killer whales eat 375 pounds of food per day. Now imagine most of that is salmon, the food source they most often in the summer, and you can imagine how devastating that can be to the salmon population of the Pacific Northwest if such whales were higher population. That's equivalent salmon each day to what 200 Americans for a year (<300,000 metric tons per year total consumption.)

Salmon is currently the third most popular fish in the United States (behind shrimp and tuna) and one third of it comes from Pacific salmon, both farmed and in the wild. 

The determination about diets was made using an analysis of fish DNA in killer whale poop.

A new Cochrane Review published today shows that targeting exercises to muscles that support and control the spine offers another strategy to reduce pain and disability caused by lower back pain.

Lower back pain is one of the most common health conditions worldwide. It can have substantial health and economic costs as people experience disability and general ill health, leading them to need time off work.

It may not be sexism that keeps more women from top jobs, it may be less understanding of the role of social capital in reaching the top, according to graduate student Natasha Abajian of City University London at the British Psychological Society's Division of Occupational Psychology annual conference in Nottingham.