Conservation issues are a growing concern for most scientists. As humans continue to consume natural resources, many organisms are headed for extinction. Conservation issues include the protection of trees, animals and wetlands.
Our planet would be a much different place without its richly diverse ecosystems full of plants, animals and microorganisms. What poses the biggest danger to the millions of species that call Earth home?
Since the Age of Discovery, we've been toting plants and animals to parts of the world where they don't belong. While most transplants die, some become invasive. How can these newcomers lead to breakneck-pace evolution?
If it takes $1 million a year to save the California condor, how much would it take to save every endangered species? Is it possible, and how can we save species we don't even know exist?
A wilderness becomes a grid work of streets, lights and skyscrapers. Every day, we remake the world a little more to our liking. What has that meant for the planet?
By Robert Lamb
In 2008, a food crisis left many people worldwide with empty stomachs. Most places have rebounded since then but, according to the U.N.’s World Food Programme, one out of every eight people is undernourished. Are we all eventually headed toward famine?
Despite the world's rebound from the 2008 food crisis, high food prices continue to be a problem. What is food security, and why is it so important to our future on Earth?
Saving the rainforest used to be about protesting the number of trees that were cut down. But some researchers propose that reforestation could combat habitat loss and animal extinction. Can we really bring a decimated rainforest back to life?
The waste collectors threw your recyclables into one big bin on their truck. How do you know your recyclables are being recycled? And what happens to them next?
By Josh Clark
Vertical farming is a method of large-scale farming in an urban environment. Learn about the benefits of a vertical farm and vertical farming technology.
Another series of rolling blackouts are hitting California. Learn why this is happening and how it affects you.
By Kevin Bonsor