Nadal returns to action with easy win over Cobolli in first round of Barcelona OpenMesmerising charts show world's most and least populated countries over timeDraft report says Missouri's House speaker stymied ethics investigation into his spendingNHL says it set a singleButtler's unbeaten century helps Rajasthan beat Kolkata off final ballThe Sky added plenty of star power in the WNBA draft with Kamilla Cardoso and Angel ReeseCaitlin Clark fever is spreading. Indiana is allFormer Arkansas officer pleads guilty to civil rights violation in violent arrest caught on videoWorld is not doing enough to protect coral reefs, UN envoy saysRise of the middle