Puerto Ricans were plunged into darkness again on April 18, seven months after Hurricane Maria first knocked out electricity. The island’s prolonged blackout highlights the urgent need for Caribbean countries to make their fragile, outmoded power grids more resilient by integrating clean energy sources like solar and wind. But climate change will complicate the region’s transition into renewables in unpredictable ways, writes Masaō Ashtine of the University of the West Indies in Jamaica.
An FDA panel on Thursday unanimously approved a drug made from CBD, which is derived from cannabis, to treat two forms of epilepsy. Drake University pharmacy professor Timothy Welty explains why we shouldn’t expect other drugs with CBD, at least any time soon.
A drug made from a molecule produced from cannabis gained unanimous approval from an FDA panel. But the molecule, CBD, is decidedly different from some other ingredients in cannabis: It doesn't result in a high.
Pharmacy or marijuana dispensary? Scott Sonner/AP Photo
Marijuana has a rich linguistic tradition. But drive by dispensaries like 'Advanced Medical Alternatives' or 'Alameda Wellness Center,' and you might think you’re passing the office of a physical therapist.
A.R. (Ravi) Ravishankara, Colorado State University
Earth's ozone layer shields us from harmful ultraviolet radiation. Nations have been working to reduce ozone-depleting chemicals since the 1980s, but recent studies show that there is still work to do.
Dream of the Red Chamber, by Cao Xueqin, follows the travails of a pubescent boy. Somehow, through the spats, crushes and rivalries of a handful of teenagers, the great questions of the human condition are broached.