They're easy to plant, come back year after year, and deer rarely eat them.
Summer is here and many people from around the world will be visiting America's national parks. The National Park Service expects over 270,000,000 guests at parks every year. Yellowstone National Park is one of the most popular – every year at least 2 million tourists enjoy the park's wildlife and unique geothermal features. Yellowstone was the first American national park and is renowned for its bears, wolves, bison, geysers, and hot springs.
A flamingo chick is nudged by its mother in their enclosure in the Budapest Zoo in Hungary in June 2009. With fifteen chicks newly hatched the number of flamingos at the zoo has grown to 98.
Oil companies are eyeing Alaska's largely untapped outer continental shelf. Critics say that's another Exxon Valdez waiting to happen.
When landscaping for wildlife, look to wildflowers to attract butterflies, hummingbirds, and more.
Bagheera Kiplingi, the world's first vegetarian spider, shows how much creatures can change to exploit available resources.
Russians are surprised, but largely welcoming of Obama's prize.
Outside the UN, thousands of Iranians from across the US – and beyond – protested Iran's elections and the continued detention of opposition supporters.