Weather forecasters sometimes warn of storms that unleash such unusual rain they are described as 100-year or even 500-year floods. Here’s what to know about how scientists determine how extreme ...

Weather forecasters sometimes warn of storms that unleash rains so unusual they are described as 100-year or even 500-year floods. Here’s what to know about how scientists determine how extreme ...

A "100-year flood" means a 1% chance of that level of flooding happening each year. Houston saw three 500-year flood events within three years from 2015 to 2017, including Hurricane Harvey.

Weather forecasts sometimes warn of storms that can unleash such unusual rainfall that they are described as 100-year or even 500-year floods Weather forecasters sometimes warn of storms that ...

An endangered giant tortoise has become the oldest first-time mom of her species after having her first babies at around 100 years old. Philadelphia Zoo recently hatched eggs laid by an elderly ...

When flooding is severe, you'll sometimes hear the phrase "100-year flood" used to describe the destruction. That can be a misleading term, say experts, because it doesn't mean that level of ...

“Most 100-year-olds probably can’t get up out of bed for 20 minutes,” added Aramis Pettinato, 25, of Staten Island, “and she’s doing a show for an hour and a half, singing and hitting ...

A few days later, Evie made her first entry. “Grandmas were at our place,” the 10-year-old began in cursive. The date was January 1, 1936. Nearly 90 years later, Evie is still writing.