Uganda's power supply is bad. In many places electricity is so scarce that it is rationed. Some schools are looking for alternative energy sources.
Building a completely solar-powered town is a challenge, even in very sunny Florida. And not just for technical reasons. Getting average buyers to go green sometimes means having to compromise.
In Uganda, there are no rhinos left in the wild. But one conservation organization is using a special breeding project to reintroduce the endangered animals to the country where they once roamed free.
Clean fresh water is scarce throughout much of the world with as many as 2.1 billion people lacking safe drinking water at home. And climate change is adding to the stress. These innovations could help.
A year ago, Kenya banned plastic bags and introduced the toughest rules in the book to punish anyone caught making, selling or using them. Have these measures worked?
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