Solar panels made from materials called perovskites could change how we generate electricity, opening the door to flexible and even transparent solar panels.
López Obrador said the program could create up to 1.3 million jobs across southern Mexico and Central America and offer an eventual chance for work visas to the U.S.
The world's two biggest carbon emitters said in a statement that the climate crisis "must be addressed with the seriousness and urgency that it demands."
“I was very worried about being caught at the airport," the teenager said. “But on the flight, I finally felt safer and the most relaxed in a long time.”