Polar Bear Endangerment: Causes and Projections
Polar bears are Vulnerable under IUCN. Sea ice has lost 40% since 1979. Projections show 2/3 of the global population gone by 2050 without deep emission cuts.
April 2026
Why Polar Bears Are Marine Mammals
Polar bears are legally marine mammals. One tagged female swam 687 km without stopping. The science of how they do it and why such swims are now common.
Polar Bears: Marine Mammals and Swimming Habits
Everything about the polar bear: size, habitat, diet, hunting, reproduction, conservation, and the strange facts that make Ursus maritimus the planet's largest land carnivore.
Bird Migration: Epic Journeys in Nature
Explore the science of bird migration, from the Arctic tern's 44,000-mile annual journey to the bar-tailed godwit's non-stop 7,000-mile flight. Expert-written guide covering V-formation aerodynamics, magnetic navigation, flyways, altitude records, and the threats facing migratory birds worldwide.
March 2026
Mammoth Extinction: Climate and Human Impacts
Woolly mammoths survived on Wrangel Island until 4,000 years ago. Expert guide to why mammoths went extinct, who killed them, and de-extinction science.
January 2026
Polar Bear: The Arctic's Apex Predator in a Warming World
Polar bears are the largest land carnivores and face extinction from climate change. Expert guide to how they survive -40 C and why sea ice is critical.
December 2025
In-Depth Look at Polar Bears: Habitat and Facts
Polar bear vs grizzly bear: size, strength, diet, habitat, and the wild pizzly bear hybrids produced as climate change forces their ranges to overlap.
November 2025
Why Coral Reefs Are Called Ocean Rainforests
Explore coral reefs, Earth's most biodiverse marine ecosystems. From symbiotic algae to mass bleaching events, learn how reefs work and why they are disappearing.
Is the Great Barrier Reef Really Dying?
Coral bleaching has damaged 50 percent of Great Barrier Reef corals since 2016. Expert guide to what is actually happening to the world's largest reef system.
August 2025
Brain Coral: The Coral Reef Ecosystem
Everything about brain coral: the grooved brain coral Diploria labyrinthiformis, its labyrinthine polyp colonies, 900-year lifespans, mass spawning, zooxanthellae symbiosis, bleaching, and Caribbean reef decline.
July 2025
Snowy Owl: Distinctive Features and Habits
Everything about the snowy owl: size, habitat, diet, lemming cycles, irruptions, reproduction, and the strange facts that make Bubo scandiacus one of the Arctic's most distinctive birds.
Emperor Penguin: The Largest Penguin and Its Life Cycle
Everything about the emperor penguin: size, Antarctic habitat, deep-diving diet, winter breeding, male incubation, conservation, and the strange facts that make Aptenodytes forsteri the world's largest penguin.
Green Sea Turtle: Migratory Ocean Traveler
Everything about the green sea turtle: size, tropical ocean habitat, seagrass diet, 2,500 km migrations, natal homing, nesting arks at Tortuguero and Raine Island, and the strange facts that make Chelonia mydas one of the world's most traveled reptiles.
June 2025
Staghorn Coral: Traits and Restoration Efforts
Everything about staghorn coral: size, habitat, growth rate, reproduction, White Band Disease, climate bleaching, and the restoration programs trying to save Acropora cervicornis from extinction.
April 2025
Elkhorn Coral: Challenges Faced by a Vital Reef Species
Everything about elkhorn coral: size, habitat, wave-resistant branching, reproduction, White Band Disease, Stony Coral Tissue Loss Disease, the 2023 Florida heatwave, and the restoration programs trying to save Acropora palmata from extinction.