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Green tea and iron, bad combination

Green tea is touted for its many health benefits as a powerful antioxidant, but experiments in a laboratory mouse model of inflammatory bowel disease suggest that consuming green tea along with dietary iron may actually lessen green tea’s benefits.

Increased carbon dioxide has altered photosynthesis of plants over the 20th century

Researchers at UmeƄ University and the Swedish University of Agricultural Sciences have discovered that increasing levels of carbon dioxide in the atmosphere have shifted photosynthetic metabolism in plants over the 20th century. This is the first study worldwide that deduces biochemical regulation of plant metabolism from historical specimens. The findings are now published in the leading journal PNAS and will have an impact on new models of future carbon dioxide concentration in the atmosphere.