akira saheki, nhk world, london. >>> scientists have made a discovery that may shed new light on humanlution. our homoerect russ ancestors lived in kav about 2 million years ago. researchers have found evidence of two other prehuman species from that period. u.s., german and british experts published their discovery in the british science journal "nature." they found three fossils of a jaw and teeth at digs in northern kenya. the bones are distinct from those of homoerect us. studies confirm they are from two different species. the find was made clear -- made near other early human remains. the researchers say this suggests at least three species lived side by side. >>> they might look a little like your average vacation snaps but the latest images from nasa's mars probe curiosity are anything but. the roving lab has just sent back its first high resolution pictures of the planet's rugged landscape 566 million kilometers away. these new photographs show the northern wall and rim of the crater where curiosity landed. they reveal jagged peaks resembling mountain ranges. and clear images

nhk world's akira saheki has more from london. >> reporter: the uk is rocking as their athletes are having the most successful games in olympic history. even the post boxes have changed color to celebrate. the royal mail is putting some polish on the post. the british government's postal service is painting mailboxes in the hometowns of some athletes gold. and it's issued stamps to commemorate gold medalists. >> we are delighted it is this many. it's been keeping us very busy. we hope there's a few more chances yet to come. >> reporter: the royal mail is honoring a whole of gold medals that's exceeded expectations. workers have put some glitter on about 50 mailboxes, including one in a residential area of wimbledon. this past sunday, andy murray became the first british man in 104 years to win a gold medal in singles tennis. >> it's such a great honor and a lovely way i think to recognize not just andy, but all the gold medalists for great britain, to have the stamp and then also to have the mailbox in your hometown and also one at wimbledon. it's very special. >> reporter: the postal serv