“Scientists Warn Trump’s Border Wall Will Be Bad for the Planet”
President Donald Trump’s plan for a southern border wall will cost billions of dollars and has already sparked a diplomatic rift with Mexico. It’s also going to be bad for the planet.
A 1,000-mile (1,600-kilometer) wall would require an estimated 275 million cubic feet of concrete. It would release as much as 1.9 million metric tons of carbon dioxide into the atmosphere, according to Christoph Meinrenken, an associate research scientist at Columbia University’s Earth Institute. That’s more than the annual emissions from every home in Pittsburgh.