Leaders from the world’s major industrialised nations began talks on Friday at a G7 summit in Sicily which is expected to expose deep divisions with U.S. President Donald Trump over trade and climate change. Laura Frykberg reports.

Hotter nights in a warming world could have significant effects on how well people sleep, a new study suggests.

From Wal-Mart to PepsiCo, companies are churning out foods with unusual tastes or ingredients weeks after Starbuck’s “Unicorn Frappucino” sparked a sensation. Fred Katayama reports.

CNN’s Christine Romans explains what a trade deficit is, and why the U.S. trade deficit alone should not scare you.

Follow every step in the process of turning a pile of cotton into thread, then fabric and finally a shirt.

Safety-net hospitals keep us all healthy by treating the patients no one else wants. Don’t let Republicans destroy them.