Forrest Galante, host of “Extinct or Alive” on Animal Planet, helps us celebrate Shark Week by explaining how we search for — and find! — lost species in the open ocean. Then, you’ll learn about the two types of nostalgia (reflective nostalgia and restorative nostalgia) and how they can influence your well-being.

Learn about whether sharks can really smell a drop of blood from a mile away; how some sharks give birth from two uteruses (and why that’s not even the weirdest part); and the complicated way interstellar travel can mess with language.

To wrap up our Shark Week coverage, learn about why the US military tried to develop "Shark Chaser" shark repellent during World War II. Then, learn about the leading theories explaining why moths are drawn to lights; and the difference between mummies and fossils.

Environmental cardiology researcher Dr. Aruni Bhatnagar explains why experts are looking at our environment to improve our health. Then, learn how Polynesians and Native Americans connected across more than 2,000 miles of ocean — all the way back in the 12th century.

Learn about what your muscles go through when they get pulled, whether trees have heartbeats, and the real science behind the recovering alcoholics’ mantra “one day at a time.”

Learn about why you have false memories of doing daily tasks; how we know that dogs might be able to sense Earth’s magnetic field via magnetoreception; and the science behind why there’s no up or down in space.

Learn about how your schedule might be hurting your health, why the mantis shrimp is able to punch so hard without hurting itself, and who invented the aluminum can.

Learn what environmental cardiology has taught us about how we should live, with help from Dr. Aruni Bhatnagar. Then, you’ll learn about the world’s first 3D-printed nuclear reactor core; and why spaghetti always breaks in three.

Learn about three mythological creatures that were inspired by real fossils, how people prefer to root for winning individuals over teams, and how scientists have created interactive paper.

Learn about why cancer is stranger than we think and how scientists have “teleported” the behavior of real fish into robot fish.

Learn about how cold the last ice age was, why your body’s stress response can actually be healthy for you, and how to stop a jack-a-lantern from spoiling.

Learn about why it’s harder to clean grease off of plastic than glass; how zoos use their own version of dating apps for breeding programs; and why science says you don’t have to be married to be happy.

Learn about the impressive memories of goldfish. Plus, hear from Dr. Kat Arney about why an evolutionary perspective may be the key to fighting cancer.

Learn about why people prefer round numbers over precise ones, thanks to a principle behavioral economists call attribute framing; and whether there really are wasps inside figs.

Learn about how patient O became patient zero, what it takes for a species to evolve twice, and how pesky fruit flies keep getting into your garbage.