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Celiac disease is an autoimmune disease in which the ingestion of gluten induces enteropathy, or inflammation of the gut, in genetically susceptible individuals. This destruction of the gut means that nutrients cannot be absorbed, leading to a variety of clinical symptoms: anemia due to the lack of iron, atherosclerosis due to the lack of calcium, failure to thrive in children, and GI stress, among others.

What can science reveal about our “character” -- that core of good, or evil, that shapes our moral behavior? The answer, according to a new book, is that there may not be much of a core, after all.

SANTIAGO (Reuters) - Chile gave the green light on Monday to the divisive $3.5 billion HidroAysen hydro-power dam project that promises to ease energy squeezes, despite objections that it will ruin pristine Patagonian valleys.

This time of year is deadline season for many people.

By Shinichi Saoshiro KAWAUCHI, May 10 (Reuters) - Residents of a Japanese village [More]

It is hard to court the opposite sex when you are cemented in place, which explains why polyps--the tiny creatures whose exoskeletons form corals--do not reproduce by mating. Instead they cast millions of sperm and eggs into the sea, where they drift up to the ocean surface, collide, form larvae and float away to form new coral reefs

Key concepts Density [More]

By Andrew Quinn WASHINGTON (Reuters) - Leaders of Arctic nations gather in Greenland this week to chart future cooperation as global warming sets off a race for oil, mineral, fishing and shipping opportunities in the world's fragile final frontier. [More]

By Andrew Quinn WASHINGTON (Reuters) - Leaders of Arctic nations gather in Greenland this week to chart future cooperation as global warming sets off a race for oil, mineral, fishing and shipping opportunities in the world's fragile final frontier.

Drilling for natural gas is booming in Pennsylvania--thanks to fracturing shale rock with a water and chemical cocktail paired with the ability to drill in any direction. Despite homeowner complaints, however, research on how such hydraulic fracturing, or fracking, is impacting local water wells has not kept pace. Now a new study that sampled water from 60 such wells has found evidence for natural gas–contamination in those within a kilometer of a new natural gas well.

MURCHISON SHIRE, Western Australia--The pilot of the eight-passenger Cessna turboprop lines up the nose of his plane with a red-dirt landing strip ahead, a band of cleared Earth not all that different from the flat, sparsely vegetated terrain below.

By Stanley Carvalho ABU DHABI (Reuters) - Renewable sources such as solar, wind and hydropower could fulfill almost 80 percent of the world's energy demand by 2050 with the right policies, according to a U.N. report which won backing from governments on Monday.

Dark matter. Nobody knows what it is, but it's thought to make up a quarter of the universe

While large-scale efforts to curb greenhouse gases aren't likely to happen in the near future, advocates are thinking of smaller ways to reduce emissions in the meantime. Recently, Vanderbilt University professor Michael Vandenbergh and two others proposed the idea of voluntarily labeling carbon footprints on products in the journal Nature Climate Change . [More]

By Chikako Mogi and Risa Maeda NAGOYA/TOKYO, Japan (Reuters) - Japanese power firm Chubu Electric Monday agreed to shut a nuclear plant until it can be better defended against the type of massive tsunami that in March triggered the worst atomic crisis in 25 years. [More]