The last male Northern white rhino died in February. Two females remain, but extinction seems likely. (Shutterstock) 29 marzo 2018 A ban on captive animals could speed up extinction Laura H Graham, University of Guelph We can’t save all endangered species, but we could save some. Zoo populations will be the last hope for many threatened species.
Paula Olson/NOAA 7 junio 2017 The campaign to save Mexico’s vaquita porpoise faces the same problems as the War on Drugs Alejandro Espinosa Herrera, University of Oxford Both focus too much on controlling supply and not enough on demand.
A dead vaquita entangled in a gillnet. NOAA Fisheries West Coast 31 octubre 2016 Why the current plan to save the endangered vaquita porpoise won’t work Andrew Frederick Johnson, University of California, San Diego As the vaquita porpoise heads towards extinction, new management measures in Mexico still may have missed the point – affecting not one but two critically endangered marine species.