More and more, scientists have realized that DNA is not the only way that a parent can pass on traits to their offspring. Events experienced by a parent over a lifetime can also have an impact.
Because plants cannot pick up and move, they have evolved a plethora of strategies to cope with environmental stresses, whether they bring a harsh spell of drought or a browsing deer.
While new evidence suggests that Mars may harbor a tiny amount of liquid water, it exists today as a largely cold and arid planet. Three billion years ago, however, the situation may have been much different.
When John Medaglia joined the University of Pennsylvania a year ago as a postdoctoral fellow, he didn’t yet have a precise path. Now it’s a little clearer, thanks to a prestigious honor given out to just 16 young scientists across the country.
Achromatopsia is a rare, inherited vision disorder that affects the eye’s cone cells, resulting in problems with daytime vision, clarity and color perception. It often strikes people early in life, and currently there is no cure for the condition.
Periodontitis, a severe form of gum disease, doesn’t just cause soft-tissue inflammation and bleeding. It also destroys the bone that supports the teeth. If it progresses unchecked, it can lead to tooth loss and is even associated with systemic inflammatory conditions like atherosclerosis and rheumatoid arthritis.
Biopharmaceuticals, or drugs that are based on whole proteins, are expensive to make and require refrigeration to store. Insulin, for example, is unaffordable and inaccessible to most of the global population.
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Penn, University of California and Army Research Lab Show How Brain’s Wiring Leads to Cognitive Control
How does the brain determine which direction to let its thoughts fly? Looking for the mechanisms behind cognitive control of thought, researchers at the University of Pennsylvania, University of California and United States Army Research Laboratory have used brain scans to shed new light on this question.