MODERATOR: (Via interpreter) Thank you very much, Marco Rubio, Secretary of State of the United States. Thank you very much, and thank you to the President of the Republic Rodrigo Chaves. We'll start ...

This video can help pupils learn about the physical geography of the Earth. Teachers can use the film to introduce how the landmass of Earth is grouped into seven continents and the main areas of ...

Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across ...

You can tell roughly how old they are by their size. They grow about 10cm every 1000 years. The stalactites and stalagmites make these really dramatic limestone features inside caves. Look!