As the Covid-19 lockdown continues around the world, global carbon emissions have seen the sharpest fall since records began. According to the new study published in the journal Nature Climate Change, daily carbon emissions plunged by 17 percent by early April. The study is the first definitive one for global carbon output in 2020 and states that the annual decline is likely to be only about 7 percent as countries slowly go back to normal activity. If the restrictions are lifted by mid-June, the fall is likely to be only 4 percent. This would still point towards the biggest annual drop in emissions since the second world war!