What is the Nipah virus and is it spreading in southern India?
The Nipah virus is a highly pathogenic zoonotic virus causing death in 40 to 75 percent of human infected cases, first confirmed in a 52-year-old man in Kerala.
Daily briefing: The true nature of Greenland's unique sled dogs revealed by centuries-old DNA
Qimmit - a type of sled dog that has been kept by Inuit in Greenland for nearly 1,000 years - don't share much DNA with wolves, despite a reputation for having been interbred.