Plastic drink bottles, disposable utensils and balloons are among the most deadly items.
The project could reshape the world in political, economic and cultural terms, and poses important environmental risks.
While greenhouse gases are warming Earth’s surface, they’re also causing rapid cooling far above us.
Genetic information can play a key role in the effort to conserve koalas and other species.
To try to quell human-wildlife conflicts, many conservationists and governments have turned to financial compensation.
Weight for weight, coffee produced by the least sustainable means generates as much carbon dioxide as cheese.