You can learn a lot about thermodynamics while sitting indoors without air-conditioning on a hundred-plus-degree day. Maybe not thermodynamics, exactly;...
Seattle
Seattle topped its all-time record high Sunday when thermometers climbed to 104 degrees -- so hot that even the normally...
Note: Some tour providers on this list may have limited or ceased operations due to COVID-19. Check with your tour...
Note: Some tour providers on this list may have limited or ceased operations due to COVID-19. Check with your tour...