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Charles Darwin's first diagram of an evolutionary tree appears in his First Notebook on Transmutation of Species (1837).
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Darwin’s Evolutionary Tree Diagram

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Workers contracted by BP load oily waste onto a trailer on Elmer's Island, just west of Grand Isle, La., May 21, 2010.
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Gulf of Mexico Oil Spill Workers

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During whale hunts, this carved whale box stored harpoon blades like the three shown beside it.
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Inupiat Harpoon Box

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Phoenix is seen skim feeding off the coast of Maine in August 2004.
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Phoenix Feeding

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Students share a microscope to get a closer look at plankton samples from the Deepwater Horizon Oil Spill.
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Students Study Plankton

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Scientists believe orange roughy (Hoplostethus atlanticus) live 150 years or more.
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Orange Roughy

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Dr. Vecchione served as Chief Scientist on this 2009 expedition to the Mid-Atlantic Ridge.
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Dr. Michael Vecchione

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A cable connects a remotely operated vehicle (ROV) to a ship at the surface.
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ROV Tethered to Ship

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Whales are identifiable by their distinct pattern of callosities.
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Whale Callosities

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Snow petrels hunt in Antarctic sea ice, feeding on krill and fish.
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Snow Petrel

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A fox explores a tide pool.
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Fox at the Tide Pools

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Dark brown oil floods a marsh after the Deepwater Horizon oil spill.
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Oily Marsh after the Oil Spill

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