The 3,100km concrete wall Donald Trump plans to build along the US-Mexico border would be a disaster for the border zone's ecosystems, writes Shonil Bhagwat. Among the species at risk: ocelots, bears, Bighorn sheep, the US's last wild jaguars facing genetic isolation north of the border, and the Bald eagle, the US's national bird.
The Atlantic rainforest of Brazil is a biodiversity treasure, writes Miranda Dyson - as exemplified by the discovery of seven minute and beautiful frogs. But with the forest already reduced to under a tenth of its original extent, and going fast, they and countless other species may not survive much longer.
