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Polar bear diet changes as sea ice melts

Polar bear diet changes as sea ice melts

A series of papers recently published by scientists at the American Museum of Natural History suggests that polar bears in the warming Arctic are turning to alternate food sources. As Arctic sea ice melts earlier and freezes later each year, polar bears have a limited amount of time to hunt their historically preferred prey — […]

Turistii ocolesc Beijingul, din cauza poluarii

Turistii ocolesc Beijingul, din cauza poluarii

    Ceata si fumul inecacios au pus stapanire pe capitala Chinei, in ultimele zile. Acest lucru a determinat autoritatile locale sa ridice nivelul de alerta in caz de poluare la culoarea galbena, al doilea cel mai ridicat grad din cele patru ale codului de vreme rea. Din cauza smogului, vizibilitatea nu depaseste cateva sute […]