Plant plankton are tiny creatures that live in the oceans and carry out a job you and I depend on to stay alive. They produce half the world's oxygen, and suck up planet-warming carbon dioxide. Yet this year, one of the world's most distinguished scientific journals, Nature, revealed that 40 per cent of them have been killed by the warming of the oceans since 1950. Professor Boris Worm, who co-authored the study, said in shock: "I've been trying to think of a biological change that's bigger than this and I can't think of one." That has been the result of less than one degree of warming. Now we are on course for at least three degrees this century.
Note that “begins” takes place before 1950...
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