NBC News

We explain the science behind typhoons, answer all of your Olympic questions and meet some of the young athletes competing.

We preview of the Tokyo Olympics, we meet the nation's youngest chess master and U.S. Surgeon General Dr. Vivek Murthy answers viewers' questions about the pandemic.

We meet the winner of this year’s Scripps National Spelling Bee, Dr. John shares what you need to know to stay safe and a “Space Jam” star tells us about teaming up with LeBron James.

Dr. John answers viewers’ weekly questions about the coronavirus, we travel to Brazil to learn about the diverse culture and we meet two sisters who are making history as they head to the Tokyo Olympics

We learn how waves are formed in the ocean, Dr. John answers viewers’ weekly questions about the coronavirus and we meet a teenager who cut his hair all for a good cause.

We learn about the recent summer heat, we travel to Greece to share details about the country’s rich history and we meet surfer Caroline Marks.

We learn why some of our favorite treats are costing more, we are introduced to this year's Doodle for Google national contest winner and we meet a teen who set a new world record while earning a spot on the Paralympics Team.

We learn what it takes to become a U.S. citizen, see a preview of this year’s Westminster Dog Show and meet some New Jersey students who are helping younger kids excel in remote learning.

We learn more about Memorial Day, Dr. John teaches us how sunscreen works and we meet a California teenager who is helping kids who are battling cancer

Lester Holt shows us how the country is reopening, Dr. John Torres answers viewers’ weekly questions and NBC News’ Kevin Tibbles takes us across Alaska