By Christina Anderson and Amelia Nierenberg Trump’s Foreign Aid Freeze Causes Fear of H.I.V. Resurgence in Africa Patients and health care advocates said the abrupt decision to halt U.S. funding ...

Often dubbed the unicorns of the sea, narwhals are strange and beautiful creatures with long tusks protruding from their heads. Members of the population of more than 80,000 can weigh up to 4,200 ...