Chris Hemsworth, Alzheimer's and why Hollywood is suddenly obsessed with caregiving Massachusetts woman accused of strangling her 3 kids seeks to move upcoming trial A Scientist Says Aliens May Have ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi, I'm Miss James. Thank you so much for being here today with me. For this lesson, all you will need ...

NARRATION: Back in the deepest, darkest depths of time, there lived a great mathemagician called Hypatia. Numbers fell under her spell one by one. With them, Hypatia could do anything. Now, Hypatia is ...

Picture a bridge made of Legos. One side has three support pieces, the other two. How would you stabilize the bridge? Most people would add a piece so that there are three supports on each side, a new ...