Not only will Cactus High School's revamped campus pond serve as a place for animals and education, but it'll help students ...

They may live to be 80 to 100. FEEDING: Desert grasses and spring wildflowers are tortoises' primary nutritional source. In summer, dry grass stems and cactus pads are main sources of sustenance.

U.S. News Insider Tip: This location is a must-visit. Along the way, you'll encounter various species of giant tortoises and cactus forests, home to Darwin's finches. You'll also find the Station ...

But over at Isabela Island, the dominant plant is the prickly pear cactus, a delicacy to giant tortoises. Some biologists have suggested the cactus adapted to this threat by growing taller ...

U.S. News Insider Tip: This location is a must-visit. Along the way, you'll encounter various species of giant tortoises and cactus forests, home to Darwin's finches. You'll also find the Station ...