Could cloning be the answer? As we discover the incredible benefits of the world's oldest trees, we are losing them to climate change. But an exciting new project offers hope.
Ancient trees that could save the world
Glossary
The Senator - It grew in Seminole County Park in Florida.
Bald cypress - A type of tree that flourishes in wet areas such as swamps and usually grows to around 100 feet.
Sequoia - A Californian tree which can grow to around 250 feet.
Rocky Mountains - The biggest mountain range in North America, running for 3,000 miles from Canada to New Mexico.
British Columbia - A province on the west coast of Canada. More than half of it is covered by forests.
National Register of Big Trees - The size of each is calculated by adding the height to the circumference and a quarter of the width of the leaf canopy at the top.
Presidio - A former military base.