In the heart of California, the Sequoia and Kings Canyon National Parks are home to some of the tallest trees on the planet.

The count estimated a winter population of 9,119 monarchs this year as climate change, habitat loss, pesticides and disease ...

In the southern reaches of a peninsula that juts out 760 miles into the North Pacific Ocean lies Baja California Sur, Mexico's least populated state and the last one to join the country.

But in California, it's all possible. And often, you don't have to travel far to get from one landscape to the next. The Golden State has the most national parks of any state in the U.S. and that ...