Can’t do sit-ups? The 4 standing core exercises I recommend if you can’t get on the floor

Strengthen your core without the mat ...
CNN

Earth’s core has slowed so much it’s moving backward, scientists confirm. Here’s what it could mean

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...
Science Daily

Earth's inner core is undergoing a transformation

Earth's inner core is undergoing structural transformation. Located 3,000 miles below the Earth's surface, the inner core is anchored by gravity within the molten liquid outer core. Until now the ...