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Someone recently asked me why I prefer free diving over scuba. There are practical reasons (less gear) but the main reason is that animals respond better when I’m holding my breath with them. I took this photo in the Bahamas, miles from land, alongside a wild dolphin that swam with me and rose to the surface when I did. Moments like these are surreal.
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This month marks 60 years since the first successful flyby of Mars. Here are Mariner 4's first images of Mars. Mariner 4 is still flying around uncontrolled in space today.
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