Sotheby's latest auction house to end rhino horn sales

Sotheby's on Saturday became the latest international auction house to end the sale of rhino horn artefacts, withdrawing antique lots from an upcoming event in Hong Kong following an outcry from environmental groups.

Egypt unveils pharaonic tomb found in Luxor

Egypt says archeologists have found a pharaonic tomb in Luxor housing the mummies of a priest and his wife from the 13th century B.C.

New lander will add to humans' long fascination with Mars

In our solar system family, Mars is Earth's next-of-kin, the next-door relative that has captivated humans for millennia. The attraction is sure to grow with Monday's arrival of a NASA lander named InSight.