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Human populations have always been exposed to ionizing radiation, and more so in modern life due to its use in medicine, industry and the armed forces. Whilst the risks to human health from medium and high-level radiation are relatively well-understood, the risks at lower levels are less clear.  Mixed messages about the safety of low doses of radiation from different sources have created confusion for the public and for policy makers.  

A body of research putting people with Type 2 diabetes on a low calorie diet has confirmed the underlying causes of the condition and established that it is reversible.

On the steep farming slopes of China, Bozhi Wu and his research associates are finding ways to improve economic and environmental stability.

For many Canadians, summer time means time at the lake, swimming, fishing, boating, and relaxing. Nothing can spoil this experience like blue-green mats of muck, caused by algal blooms. These blooms negatively affect not only recreational activities but also put drinking water source, property values, wildlife, and human health at risk. In the 1970s, scientists discovered that the nutrient phosphorus caused algal blooms, which led to new regulations and improved sewage treatment. Nevertheless, blooms continue to plague many Canadian lakes. To investigate what might be happening, scientists looked to see whether phosphorus might be recirculating from the mud at the bottom of lakes back into the water.

Studies have previously estimated that the amount of land worldwide suitable for growing coffee could shrink by an estimated 50 percent by 2050 as global temperatures rise, rain patterns change, and ecosystems shift due to climate change. But a new study in the Proceedings of the National Academy of Sciences predicts a far worse situation for Latin America, the world’s largest coffee supplier: The region could lose nearly 90 percent of its coffee-growing land by mid-century.