Students and others formed the chain along the Rio Grande
'It's simply another illustration of just how completely tough earth life is', says Penelope Boston, head of NASA's Astrobiology Institute
The President pledged to his voter base that he would expel the ‘bad dudes’, feulling an anti-immigrant rhetoric
'Right now, I would be considered by the Mexican public as the most malicious bad guy they have'
Clip aired during game shows first half of mother and daughter's journey, inviting viewers to watch conclusion online
The Israeli company that built Israel’s border fence is now seeking to build Donald Trump’s planned wall between the US and Mexico.
Central American filmmakers are using cinema to address growing misinformation and misconceptions about the migrant experience
US President allegedly said he would send troops into Mexico to stop 'bad hombres down there' if Mexico did not stop them itself, according to leaked transcript
Surgeons and their patients are finding that virtual reality can relieve the pain and stress of operations – and it’s safer and cheaper than sedatives. Jo Marchant travels to a Mexican mountaintop village to visit a pioneering clinic
Prime Minister of Israel says his own wall building policy has been a 'great success'
Campaign urges consumers not to buy products from the world’s biggest coffee seller, with the hashtag #AdiosStarbucks
'We Berliners know best how much suffering a wall can cause,' Michael Müller says
Near the US-Mexico border you might expect to find Trump supporters impatient for his wall. But this old mining town is different
Making the cement needed for a 1,000-mile concrete wall would emit nearly two million tons of carbon dioxide and cut off endangered animals from part of their territory
Move comes as US neighbour wrestles with Donald Trump over highly divisive border wall and future trade deals
Italy's Buzzi and Mexico's Cemex are likely to be the biggest winners from the controversial wall, while Texan's can expect a short squeeze higher building material prices.