William Mullen

Kenya's ambassador to the United States took pains Wednesday to allay fears that somebody in Kenya is stalking the Field Museum's two world-famous man-eating lions of Tsavo with plans to...

When Ethiopia decided six years ago it needed to find a goodwill ambassador to send on the road to spruce up its image as a nation and a tourist destination,...

When Lucy left Ethiopia earlier this month, she rode in a first-class passenger seat, accompanied by an entourage of Ethiopian museum officials. She traveled in "two small, hard-shelled suitcases, especially...

As the sun went down on Nov. 30, 1974, jubilant young scientists in a lonely desert mountain camp in northeast Ethiopia celebrated around a little pile of bones found earlier...

Adult rhesus macaques make high-pitched, sing-songy vocalizations when they encounter infant monkeys -- just the kind of sounds humans seem to naturally fall into using around infants, scientists reported this...

An experienced beluga whale mother gave birth so quickly early Thursday that her newborn calf was vigorously swimming and exploring before the Shedd Aquarium could assemble all of the three...

Mauyak, an experienced beluga whale mother at Shedd Aquarium, gave birth to an apparently healthy, vigorous calf this morning, just 75 minutes after going into labor. The unnamed calf, whose...

Chimpanzees may be the closest cousins there are to human beings, with the two species sharing 98 percent of the same DNA, but a group of researchers in Germany recently...

Brought to Chicago two years ago in hopes that he would impregnate the Shedd Aquarium's four female Pacific white-sided dolphins, an aging but proven dolphin sire named Jump died Monday...

Probably the most surprising and intriguing new boarder at Lincoln Park Zoo's refurbished Kovler Lion House is not a lion or even a cat. It is a red panda, a...