Everand Logo

Welcome to Everand!

  • How It Works

    LETTER OF THE MONTH

    Apr 15, 2021 3 minutes

    Made on Mars

    ■ Dear HIW, Mars is in the news lately, and I frequently read about meteorites that arrived from Mars. How do we know this? There are a zillion possible places a meteorite could come from. We have no actual samples to compare these meteorites to, and I doubt they are stamped ‘made on Mars’, so how can we be so sure? Ralph Varney

    Today scientists have the tools and data to be able to determine where some meteorites originated. But this was not always possible. Thanks to spacecraft such as NASA’s

    You’re reading a preview, subscribe to read more.

    More from How It Works

    How It Works2 min read
    How Acupuncture Works
    In Western medicine, chemical painkillers and other lab-produced drugs are often prescribed for common ailments. However, an ancient Chinese medical practice involves the controlled insertion of needles beneath the skin – an alternative medicine that
    How It Works3 min read
    How Owls Hunt
    Known as a symbol of wisdom and intellect, owls are some of the most clued-up killers in the animal kingdom. The majority of owls are nocturnal ambush hunters. Waiting perched on a low branch or fence post, owls use their amazing sight and hearing to
    How It Works6 min read
    Terabit broadband
    The internet is inundated. There are now 5.35 billion people online – that’s 66 per cent of the world’s population. On average, they spend seven hours a day surfing the web. And 80 per cent of what they do is watch video – whether that’s video callin

    Related Books & Audiobooks