While the number of killing frosts in southern Florida has remained unchanged since 1984, the number a short distance away declined enough that researchers are implicating global warming, and noted that the expansion of cold-sensitive mangrove forests along Florida's Atlantic Coast has led to them edging out salt marshes.

What happens when one ecosystem replaces another? Happens all of the time, of course, and has throughout history. But it's impossible to predict the result. People who live there are not complaining, though researchers up north are concerned.

An analysis from the University of Colorado School of Medicine shows patients with Medicaid insurance seeking care in an emergency department may be driven by lack of alternatives instead of the severity of their illness.

With the implementation of the Affordable Care Act, millions of new patients will be enrolled in Medicaid and added to an already overburdened primary care system. 

When it comes to the brain, there is very little science. fMRI imaging is subjective and pop psychology concepts even more so. Even when it comes to medical conditions, like schizophrenia, little is known. Its causes are unknown, there there is no objective test for it, and its diagnosis is based on an assortment of reported symptoms - and symptom-based diagnosis got replaced in most of medicine by the 1950s. The standard treatment, anti-psychotic medication, works less in less than half of those with a diagnosis and becomes increasingly ineffective over time.

By the time they turn two, most children have had respiratory syncytial virus (RSV) and suffered symptoms no worse than a bad cold.

Yet for some children, especially premature babies and those with underlying health conditions, RSV can lead to pneumonia and bronchitis, hospitalization and have long-term consequences.

If you have been to a tomato farm, you know that commercial tomato plants have a very different look from the backyard garden variety. Rather than being tall and lanky plants, tomatoes that will be canned for sauces and juice are harvested from plants that stop growing earlier than classic tomato varieties and are more like bushes. The architecture of these compact bushy plants allows mechanical harvesters to reap the crop, but the early end of growth means that each plant produces fewer fruits than their home garden cousins.

The federal government's proposal to discontinue protection for the gray wolf across the United States could have the unintended consequence of endangering other species, insist academics who don't actually live in places where wolves are running wild, threatening animals and people.