Lily Pads as Power Outlets

Solar panels don’t have to be eyesores. The city of Glasgow is considering the installation of giant, glowing solar "lily pads" on the River Clyde. Designed by Scottish firm ZM Architecture, the circular floats are made of steel and recycled rubber and range in diameter from 15 to 45 feet. Motorized disks covered with solar panels track the sun and angle themselves for maximum exposure. Once panels soak up enough rays, the energy is converted to AC/DC power and transferred to the city’s grid, where it will help offset Glasgow’s electrical bills.

As human populations grow, pollution soils the environment and infrastructure develops, our natural habitat suffers. This may sound familiar, but scientists sent a resounding message today when they announced in a comprehensive five-year global wildlife review that these human-based causes and more are threatening one in four of the world's 5,487 known mammal species and have put 188 species in the critically endangered category.

What makes an eco-friendly meal? It's a question that has caused many heated arguments. Some say vegetarian, or even vegan, meals are the best way to lead a green lifestyle, since the livestock industry causes a plethora of environmental problems, from massive-scale deforestation to air and water pollution. Others argue that the large-scale production of corn and soy (a popular substitute for meat products) are just as bad for the environment.

In Australia, the debate has taken an interesting turn.

Lots of amphibians (a third to a half of all species) are dying, and their deaths are the breaking-edge of what many scientists are calling the first mass extinction since the dinosaurs checked out 65 million years ago, researchers say in a new paper published online in the Journal Proceedings of the National Academy of Sciences.

All elephants are known to have good memories, but it's the older ones that are wisest during times of trouble. According to researchers at the Wildlife Conservation Society and Zoological Society of London, older female elephants with knowledge of distant resources of food and water could help herds survive during crises like droughts.

Two decades ago, "saving the gorillas" became a cause celebre when researchers announced that western lowland gorilla populations in the Congo had dwindled to critically endangered numbers. Our primate relatives were threatened by a widespread outbreak of the Ebola virus, as well as poachers who hunted the animals for bushmeat.

Estimates at the time of the 1980 gorilla census were in the range of 100,000 individuals, but since then experts believed that the number had dropped to less than 50,000.

Ranchers and conservationists have long been at odds over how to manage the populations of predators at the top of the food chain. Now that wolves have been recently delisted from the Federal Endangered Species Act, state governments in Idaho, Montana, and Wyoming are wasting no time organizing hunts to reduce the animals' numbers, citing increased attacks on cattle as the reason for the culls. Conservationists are planning to respond with lawsuits against the federal government to attempt to bring the wolves back on the endangered list.

This image depicts eight million toothpicks. According to Seattle artist Chris Jordan, that's how many trees are harvested in the U.S. each month to make paper for mail-order catalogs.

The images are part of Running the Numbers: An American Self-Portrait, a series depicting the excesses and inequities of contemporary American culture. Each image portrays a specific quantity of something, such as the number of American children without health insurance, or the number of disposable batteries produced every 15 minutes. Many of the images are mosaics of common objects.