Tucson's new ‘Astro Trail' is a collection of national parks, state parks, observatories, and planetariums, that offer a ...

Winter weather will be absent for a large portion of the country as record heat blankets much of the South. The warm temperatures forecast for Tuesday are a continuation of record highs that were tied ...

Two-thirds of animal and plant populations are declining in genetic diversity, which makes it harder to adapt to ...

Texas Republican joined by North Carolina Democrat on stolen valor bill Stock Market Plunges After White House Confirms ...