The beautiful but deadly Australian sea wasp (Chironex fleckeri) is the most venomous jellyfish in the world. Its cardiotoxic venom has caused the deaths of 66 people off the coast of Queensland since 1880, with victims dying within 1-3 minutes if medical aid is not available.

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Crickets don't chirp by rubbing their legs together, they make the noise by rubbing their wings together.

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Tree rings provide precise information about environmental events, including volcanic eruptions.

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The red planet "Mars" takes 687 Earth-days to go around the Sun, compared to 365 days for Earth.

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The plant life in the oceans make up about 85 percent of all the greenery on the Earth.

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A bee has four wings.

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The deepest depth in the ocean is 36,198 feet (6.9 miles or 11 kilometers) at the Mariana Trench, in the Pacific Ocean well south of Japan near the Mariana Islands.

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Sepals are usually green. They are the first part that forms on a bud and, when the bud opens, the sepals remain beneath the petals of the flower. Sometimes sepals hold tightly against the bottom of the petals, and sometimes they curl away from the petals.

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The katydid has supersonic hearing. It can hear sounds up to 4-5,000 vibrations per second.

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Groundwater comprises a 30 times greater volume than all freshwater lakes, and more than 3,000 times what's in the world's streams and rivers at any given time.

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