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Scientists believe a giant black hole sits at the center of our galaxy.
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As cannabis becomes more mainstream, use may come with a mental health risk.
1:58
Knowing what to do and wanting to do it is not enough. Learn why.
1:13
Let's focus on the part of financial well-being you can control: your behavior.
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Defining financial well-being with NOVA’s Financial Lab host, Yanely Espinal.
3:53
Overcome mental accounting bias by adapting your mental accounts to different situations.
3:07
No one predicted that planets like this were even possible.
2:44
The Hubble Space Telescope has revolutionized our understanding of the universe.
7:07
There are ecological and evolutionary limits to consider.
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Black holes distort the space-time fabric.
3:01
Energy transformed into matter during the Big Bang.
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Asteroid impacts on Earth don't happen very often—but they do happen.
