The scientists’ warning to the US president on climate crisis was stark: the world’s countries were conducting a vast, dangerous experiment through their enormous release of planet-heating emissions, which threaten to be “deleterious from the point of view of human beings”. Some sort of remedial action was needed, they urged.
This official alert was issued not to Joe Biden, who is poised to sign America’s first ever major legislation designed to tackle the climate crisis, but in a report given to his presidential predecessor Lyndon Johnson in 1965, a year when the now 79-year-old Biden was still in college.
