NOVA : 4211
Preview | 30s
"Lethal Seas” – Oceans absorb about a quarter of the carbon dioxide in our atmosphere. With carbon emissions sharply rising, the silent killer is entering the seas at a staggering rate – raising the oceans' acidity. Follow scientists who are seeking solutions, including a unique coral garden in Papua New Guinea that offers a glimpse of what the seas could be like in a half-century.