Modern humans may descend from two or more genetically distinct streams that split but continued to occasionally mix over time in Africa.
The victim was surfing off the coast of South Australia when a shark dragged him under. Bits of wetsuit were later found.
The U.N. weather agency has warned that El Niño and human-caused climate change will likely push temperatures into "uncharted territory."
The Centers for Disease Control and Prevention issued an alert urging doctors to refamiliarize themselves with mpox symptoms and encourage vaccination for at-risk patients.