A record-breaking campaign this past Sunday saw 1.5 million volunteers plant more than 66 million trees in a 12 hour span across the large central state of Madhya Pradesh in India.
The previous world record was set last year and saw 49.3 million saplings planted over a 24-hour period in Uttar Pradesh, Northern India. The state-sponsored initiatives are in response to the Paris Climate Change Conference where India vowed to increase their forest coverage 5+ million hectares by 2030. The Indian Government has pledged $6.2 billion toward the agreement, encouraging states to join the effort. [source]
According to the Independent:
Observers from Guinness World Records also monitored Sundayâ€™s plantation and are expected to confirm in the coming weeks that the effort set a new high. The campaign was organised by the Madhya Pradesh government, with 24 districts of the Narmada river basin chosen as planting sites to increase the saplingsâ€™ chances of survival. Volunteers planted more than 20 different species of trees. [source]