Maria Parrott-Ryan – författare

Late one night, ecologist Jonathan Martin was searching for tree frogs in his Wisconsin backyard when he made an unexpected discovery. As he shined an ultraviolet flashlight in the direction of a high-pitched chirp, Martin saw a flash of bright pink at his bird feeder. That pink glow was coming from a flying squirrel. What was going on?You’re probably familiar with some kinds of glowing animals. Fireflies light up summer nights. Bioluminescent jellyfish and other sea creatures fill our oceans. But some animals glow only under ultraviolet light. This is called biofluorescence. That flying squirrel Martin found turned out to be one of the first-ever recorded sightings of a biofluorescent mammal.Follow along with Martin and his colleagues as they delve into the mystery of the flying squirrels and discover that they aren’t the only glowing mammals out there!

Late one night, ecologist Jonathan Martin was searching for tree frogs in his Wisconsin backyard when he made an unexpected discovery. As he shined an ultraviolet flashlight in the direction of a high-pitched chirp, Martin saw a flash of bright pink at his bird feeder. That pink glow was coming from a flying squirrel. What was going on?You’re probably familiar with some kinds of glowing animals. Fireflies light up summer nights. Bioluminescent jellyfish and other sea creatures fill our oceans. But some animals glow only under ultraviolet light. This is called biofluorescence. That flying squirrel Martin found turned out to be one of the first-ever recorded sightings of a biofluorescent mammal.Follow along with Martin and his colleagues as they delve into the mystery of the flying squirrels and discover that they aren’t the only glowing mammals out there!

An ingenious discovery . . . dismissed as a dangerous lie.In 1628, anatomist and physician William Harvey made a controversial claim: that blood circulated continuously through the body, pumping from the heart through the blood vessels into the tissues and then returning to the heart. His research contradicted many anatomy "e;experts"e; of the time. In the seventeenth century, European physicians did not go against the ancient Greek and Roman thinkers who'd created the foundations of Western medicine. But what if those foundations were wrong?This is the story of how humans came to understand the circulatory system. And Harvey's work is only one part of that story. Discover the breakthroughs of scientists and scholars who dared to think outside the box, from Ibn al-Nafis, an Arab Muslim scholar who discovered pulmonary circulation; to Marcello Malpighi, who studied capillaries; to Joseph Priestley and Antoine Lavoisier, who figured out oxygen's role; and beyond!