But the United States plays host to a few tree species that can make you stop and take notice. Some, like the rainbow ...

At up to 368 feet (112 meters) and 1,500 years old, redwoods are among the world's tallest and oldest living trees. Researchers are struggling to understand and protect these natural treasures.

As you start planning your holiday celebrations, you’re likely thinking of ways to make this year’s festivities truly special. One unique approach is to create a money Christmas tree that ...