At a Glance Recurrent droughts have left the Panama Canal with less water than needed to operate normally.Water is also evaporating more quickly from the freshwater lakes that supply water to the canal. It takes tons of water to move ships through the locks of the Panama Canal. When there's not enough water, the canal's managers have to limit the amount of cargo ships can carry — even after a huge expansion in 2016 that allowed much larger ships to...

More than 50 invasive carp were found in the Mississippi River between Wisconsin and Minnesota. (Minnesota Department of Natural Resources/Twitter) At a Glance The catch was the largest that far upstream in the river.They probably moved through open dams and flood gates.State and federal agencies have been battling invasive carp for decades. More than 50 invasive carp were found in the Mississippi River along the Minnesota-Wisconsin state line after months of flooding and high waters along much of the river...

At a Glance The prime minister said the quake was the biggest in Zagreb in the last 140 years. It struck at 6:23 a.m. local time Sunday about 4 miles north of the capital city.No deaths were reported, but a 15-year-old girl was in critical condition. A strong earthquake crushed cars, left buildings cracked and sent panicked residents in the streets of Zagreb, Croatia, on Sunday. The damaged structures included the capital city's iconic cathedral, which was rebuilt after being...