"Truly mind expanding ... science writing at its most engaging and rewarding" -- Tonto Williams, Electronic Scrapbook; "Algae are among the earth's oldest life-forms, pervasive in everything from pond scum to crude oil. Kassinger explains their history and biology, and makes a persuasive case for their future importance." -New York Times Book Review; "Gives a distinct view into these underappreciated organisms and demonstrates our intertwined history with algae. Hopefully, it will help readers see algae in a different light." - Science Magazine; "Fascinating and relevant...As Kassinger finds unique nuggets within algae's backstory and possible future, she unravels amazing, microscopic details of this vital resource...Where it gets really interesting is her detailed explanation of the large role algae played in the complicated, multistep process of human evolution, supplementing our ancestors' diets with iodine and the omega-3 oil DHA (docosahexaenoic acid), both essential ingredients for developing larger brains. And it has continued to serve as a nutritious food source for many cultures ever since...Kassinger has penned a wondrous story of this multifaceted, often misunderstood microorganism whose existence is vital to our own." -BookPage, starred review; "We often look for big solutions, but the reality is that the smallest things often offer hope. This globetrotting book showcases the 'algae innovators' (the phrase of the month) exploring what we can learn from these often-ignored plants." -EcoWatch; "Deep and enlightening...Readers will learn more about algae than they ever imagined (and relish every minute of it). Comparisons to Mary Roach and Susan Orlean are well-deserved, and Kassinger's erudite and wide-ranging approach should entice readers with a wide range of interests, from food to fashion, bioengineering, marine biology, farming, and general fascination with the wonders of nature. Gardeners will welcome Kassinger's latest, and everyone else will feel lucky to discover this winsome writer." -Booklist, starred review; "A fun and fascinating deep dive into the natural history, current uses, and vast potential of algae...Accessible and enthralling...Kassinger delivers the powerful and optimistic message that slime just may be our savior...Thorough but not dense, informative but never boring-a delight from start to finish." -Kirkus, starred review; "In chirpy prose chock-full of homespun metaphors...Kassinger turns an obscure subject into delightful reading...Even readers who never expected to enjoy a book about slime will find this an informative and charming primer to 'the world's most powerful engines.'" -Publishers Weekly; "Compelling ... there is something for everyone, from committed phycologists to people who hitherto (but hopefully no longer) regarded algae as an inconvenience or worse. Blanket weed may never seem the same again" -- Nature; "With brio and great wisdom, Ruth Kassinger demonstrates how the apparently humble and often disregarded algae ("pond scum") are actually amongst the major engines of life on our planet. Bloom is a classic of our environmental crisis, alongside books such as Elizabeth Kolbert's The Sixth Extinction." - Peter Forbes, author of The Gecko's Foot; "A book full of delights and surprises . . . This is a beautiful evocation of the many ways that our past and future are entangled in their emerald strands" - David George Haskell, author of Pulitzer Prize-finalist The Forest Unseen; "Ruth Kassinger is a witty and affable guide throughout this globetrotting celebration of an overlooked life form" - Thor Hanson, author of Buzz, The Triumph of Seeds and Feathers; 'Engaging and deeply informative' - Elizabeth Kolbert, author of The Sixth Extinction: An Unnatural History