Iceland, the land of ice and fire, is for geologists what the tropics are for ecologists: an opportunity for an unparalleled ...

In Iceland, the answer is mosses and lichens ... According to Icelandic ecologists, more than 600 species of mosses are found on the island. Need a break? Play the USA TODAY Daily Crossword ...

The tropics, where biodiversity and interactions among species abound, provide an alternative view of relationships between ...