Tyrannosaurus rex and other predatory dinosaurs might not have been fearless hunters after all. Using new fossil evidence, researchers in Germany propose that the large carnivores hunted mainly juvenile dinosaurs instead of giant herbivorous adults.
Continue reading about Chicken-hearted Tyrants: Predatory Dinosaurs As Baby Killers
A new study shows that certain genes are turned off early in the development of chronic lymphocytic leukemia (CLL), before clinical signs of the disease appear. The study examined cancer cells from CLL patients and from a new strain of mice that develops a very similar disease. The findings suggest that epigenetic alterations might serve [...]
Continue reading about Gene Shut-down May Offer Early Warning Of Chronic Leukemia
An estimated 200 people die each year in the U.S. after being struck by lightning. An extremely brief but intense hit delivers more than 10 million volts and is fatal in about 30 percent of cases. Recent lightning strikes in Newark resulted in one death and three injuries.
New research helps explain why infection with herpes simplex virus-2 (HSV-2), which causes genital herpes, increases the risk for HIV infection even after successful treatment heals the genital skin sores and breaks that often result from HSV-2.
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Marine biologists have demonstrated that there is considerable diversity amongst the smallest microalgae belonging to the group of so-called haptophytes. Scientists have shown that these photosynthetic microorganisms, highly diversified and extremely abundant, are some of the most important producers of oceanic organic matter.
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As we all know from experience, people eat not only because they are hungry, but also because the food just simply tastes too good to pass up. Now, a new study helps to explain how leptin, a hormone produced by fat tissue, influences that motivation to eat.
Continue reading about Fat Hormone Influences Baseline Dopamine Levels And Our Motivation To Eat
Researchers have largely put to rest a long debate on the underlying mechanism that has caused periodic ice ages on Earth for the past 2.5 million years — they are ultimately linked to slight shifts in solar radiation caused by predictable changes in Earth’s rotation and axis.
Researchers have discovered, for the first time, a common molecular pathway that is used by both normal stem cells and cancer stem cells when they reproduce themselves.
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Researchers have completed a successful flight test of the fuel cell powered XFC (eXperimental Fuel Cell) unmanned aerial system. During the June 2 flight test, the XFC UAS was airborne for more than six hours.
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Researchers are working to find natural, biologically active compounds that will sensitize cancerous tumors to therapy without damaging normal tissue.
Continue reading about Sensitizing Tumor Response To Cancer Therapy