Complex sentence: But it was James Lovelock in the mid- 1960s who first postulated a feedback mechanisms in the Earth system, into what he called the'Earth Feedback hypothesis', and he later named the Gaia hypothesis (today often referred to as Gaia theory).
Split into simpler sentences: But it was James Lovelock in the mid- 1960s who first postulated a feedback mechanisms in the Earth system, into what he called the'Earth Feedback hypothesis'. He later named it the Gaia hypothesis (today often referred to as Gaia theory).