UA Ready to Invest 'Serious Dollars' in Environmental Research (Live)
Despite budget cuts, the University of Arizona will "invest serious dollars" in environmental and climate research, top administrators said at a summit on Earth Day.

Art Show Ushers in Earth Day (Live)
Cape Farewell, a project that mixes science with photography, film, poetry and music, made its way to the University of Arizona in time for Earth Day.

Block Party Features Eco-Friendly Autos (Live)
From cooling systems to alternative fuel, the University of Arizona's Earth Day celebration featured up-and-coming and existing eco-friendly cars.

Orange Glow of Tucson Parks (Live)
TUCSON, Ariz. - To anyone driving the city streets of Tucson around sunset, an orange glow is not uncommon. But at night another orange glow lights parts of the city: high-pressure sodium lights.

Solar Pool Popularity Booms (Live)
For more than 20 years, Tucson residents have been using energy from the sun to heat their pools. Pools can be heated by gas, electricity or solar energy. Pool owners can also add solar to an existing pool heater.