When the Grizzlies Headed South Brown bears, like humans, are thought to have arrived in North America from Asia by crossing a land bridge between the continents.
At least 14,000 years ago, humans began moving from Siberia into Alaska, crossing a land bridge over what is now the Bering Sea and then colonizing both North and South America.
Denmark is linked by a bridge to Sweden, and it is an extremely popular destination for Germans, who cross a land border to enter.
Latvian police, who are co-operating with their UK counterpart, told the BBC that Mr Zalkalns could have got into the country without the authorities' knowledge if he had crossed a land border.
Migrants closely resembling prehistoric peoples of Japan and Oceania crossed a land bridge from Asia into the Americas as the last ice age waned 15,000 years ago to become the first human inhabitants of the Western Hemisphere, according to a study published this week by the National Academy of Sciences.
Some of these animals crossed a land bridge from what is today Alaska to eastern Siberia and that meant they were living, even thriving, at latitudes where few mammals can now subsist.
If you head east on National Highway 7 away from Tbong Khmum, the village where Taing lived, and toward the forests where he died, you cross a land in the midst of a great transformation.
If you head east on National Highway 7 away from Tbong Khmum, the village where Taing lived, and toward the forests where he died, you cross a land in the middle of a great transformation.
They bear striking resemblances to implements found in northeast Asia, lending support to theories that the first occupants of North America crossed a land bridge across the Bering Sea when sea levels fell during the last ice age.
This smallness, the theory goes, was what happened to the descendants of a group of homo erectus who crossed a land-bridge while hunting stegodons, and then got cut off from the mainland.
The second, Rebel Heart, picks up exactly where the Blood Red Road ended, with the colourful and opinionated main character, Saba, crossing a barren land, keeping her family safe from the Tonton and hoping to be reunited with Jack.
