The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

Discover the impact of forever chemicals on groundwater in the United States and the health risks associated with PFAS exposure.

In this season of renewal, being in the know about fresh trends can be enjoyable. With this knowledge in hand, you can engage your friends and family with entertaining conversation ...

The Oregonian/OregonLive created a new interactive map that shows how much snow was estimated to have fallen in specific areas across Oregon, Washington and the contiguous United States.

The heat mapping of metros like Reno, Nevada, could be key to taming urban heat, saving lives and designing for a cooler ...

More than 1,000 tornadoes sprout up across the US in the average year, causing billions of dollars in damage and killing scores of Americans. Track them here.

The US is also commonly referred to in three distinct ways: as simply the United States the continental United States, which excludes Hawaii; and the contiguous ... The map shows the distance ...

Hydrogen from geological formations makes up about 10% of the flammable gases that form the Yanartaş flames near Cirali, ...

A map shows snowfall projections in the US ... NOAA/National Weather Service) On Tuesday, the 48 contiguous US states are expected to experience an average low of 16.6 degrees Fahrenheit (minus ...

The limited-time sale applies to reservations made in the U.S. for nonstop flights that take off from the 48 contiguous ...