Botswana officials: More than 300 elephant die from toxix algae

BOTSWANA (NBC) - Botswana wildlife officials said on Monday that cyanobacteria was the cause of a string of mysterious elephant deaths this year that had alarmed conservationists.Cyanobacteria are microscopic organisms common in water and sometimes found in soil.Not all produce toxins but scientists say toxic ones are occurring more frequently as climate change drives up global temperatures.Some cyanobacterial blooms can harm people and animals and scientists are concerned about their potential