Apples, blueberries, peppers, cucumbers, coffee, and vanilla. Do you like to eat and drink? Then you might want to thank a bee. Bees pollinate 75 percent of the fruits, vegetables, and nuts grown in the United States. Around the world, bees pollinate $24 billion worth of crops each year. Without bees, humans would face a drastically reduced diet. We need bees to grow the foods that keep us healthy. But numbers of bees are falling, and that has scientists alarmed. What's causing the decline? Diseases, pesticides, climate change, and loss of habitat are all threatening bee populations. Some bee species teeter on the brink of extinction. Learn about the many bee species on Earth—their nests, their colonies, their life cycles, and their vital connection to flowering plants. Most importantly, find out how you can help these important pollinators.
Containing 97 percent of Earth's water supply, the ocean plays a huge role in regulating global temperatures, supporting plant and animal life, and contributing to the livelihoods of millions of people. But in spite of all this, the ocean remains drastically unexplored, and the details of its impact on human lives aren't fully understood. Scientists from around the world are realizing that to address issues plaguing the ocean, such as dead zones, coral bleaching, and climate change, we need to better understand this incredible, unique feature of our planet. With a range of impressive, cutting-edge technologies at their disposal, oceanographers have set out to measure, sample, and analyze at every turn. Every day, mysteries about the ocean are being solved, and every day, new questions come to light. The more scientists learn, the better they are able to answer these new questions. What lies in the deep? And who is at the forefront of these exciting discoveries? The scientists and research included in this book shed light on the most pressing issues currently facing oceanographers and point us in the right direction to solving these challenges.
On April 22, 1970, an estimated twenty million people held in a teach-in to show their support for environmental protections. This new celebration, Earth Day, brought together previously fragmented issues under the same banner. It was the largest nationwide event ever, and lawmakers took notice. But one day didn't change everything. Fifty years after the first Earth Day, climate change remains a dire concern. The divide between political parties continues to widen, and environmental policy has become an increasingly partisan issue. The spread of disinformation has also made climate change a debatable idea, rather than scientific fact. A new generation of advocates continue the fight to make environmental policy a top priority for the United States and for nations around the globe
Develop your STEAM skills as you design and build your very own biosphere and mini garden. This book contains step-by-step projects that give you clear instructions to make every element a model biosphere and mini garden needs, including a dome, water fountain, and pathways.
Pollution is seriously damaging our planet. Human activity and waste are harming the environment by polluting the air, water, and land. Discover the facts about where pollution comes from, where garbage really goes after we throw it away, and how we can reduce waste.
Human overpopulation is putting pressure on our planet and its natural resources.The more people there are, the more resources are consumed, harming the environment and depleting the world's supplies. Discover the facts about the world's growing population, which countries have the highest and lowest birth rates, and how overpopulation affects climate change.
Natural resources on Earth are at risk of running out. Using too many natural resources, such as water, trees, and fossil fuels, is putting pressure on our supplies and damaging the environment. Discover the facts about how resources are used around the world, which resources are renewable and non-renewable, and what the future of natural resource management looks like.
Our modern world runs on energy to power our homes and industries. We all know the problems with burning fossil fuels to create energy— it pollutes the planet and we are running out of these resources. Discover the facts about renewable and non-renewable energy resources, how our energy use contributes to global warming, and what the future of energy looks like.
Climate change is reshaping the planet before our eyes. From melting ice caps and rising sea levels to drought and destructive hurricanes, no corner of Earth is protected from the effects of global warming. Discover the facts about what climate change is doing—and will continue to do—to our planet, and how we might reduce its impact.
The huge variety of plants and animals that live on Earth is called biodiversity. As ecosystems are destroyed by climate change and human activity, plants and animals are becoming endangered and even extinct. Find out how the loss of biodiversity affects food chains and natural habitats, why it is important to humans, and how its loss threatens the health of all living things on the planet.
An exploration of Yellowstone National Park, including how volcanoes helped form its landscape, its history of preservation, and tourist attractions such as the geyser called Old Faithful.
Going wild. We don't see it as a good thing. And why would we? For most of our time on earth, humanity has been running from lions and other wilderness dangers. We've worked hard to make our local landscapes as safe and convenient as possible. Sometimes that's meant paving over areas that might burst into weeds. Other times, we've dammed rivers for electricity or irrigation. But now pollution, climate change and disruptions to the water cycle are affecting the world in ways we never anticipated. What if the new key to making our lives safer (and even healthier) is to allow the wilderness back into our cities?
As our world's population grows, so to does our need for energy. Scientists seek the next breakthrough in new technology while constantly finding ways to make current solutions cheaper and more efficient. In this title, discover what methane energy is, its history, how we use it today, and how new technologies can contribute to our energy future. Learn how methane digesters work and how they can help people in the developing world, discover ways biogas might replace natural gas, and explore the potential future uses of methane hydrates. Sidebars, full-color photos, full-spread diagrams, well-placed graphs, charts, and maps, stories highlighting innovations in action, and a glossary enhance this engaging title.
Explains what early civilizations believed about natural disasters; highlights notable eruptions, earthquakes, fires, floods, droughts, famines, and diseases, as well as two noted military failures; and recounts the end of the ancient world.
Why has coal been such a prominent energy source? How can renewable energies be stored most effectively? Linking science to practical applications and social issues to realistic goals, this new series orients ecologically conscious readers toward the future of Harnessing Energy. With a special section on historical moments involving the energy source, details on key inventors and notable discoveries, and statistics to back up objective reports, each title seeks to present a fully contextualized history of the featured energy form. A must-have for any STEM unit dealing with energy studies. In this title examine the ways in which coal has historically been used as an energy source and how current and future energy demands are changing its technical applications and efficiency levels.
The field of life science involves the study of living organisms, their organization, life processes, and the characteristics of all living things, such as plants, animals, and human beings. The reproducible activity pages supplement life science textbooks with stand-alone or coordinate one-page lessons. Sample activities include: Angiosperms and Gymnosperms, Animal Cell, Bacteria, Cell Functions, Comparing Fish/Amphibians/ Reptiles, Comparing Vertebrate Hearts, Ferns, and More!
A look at manatees, including their habitats, physical characteristics such as their unique respiratory system, behaviors, relationships with humans, and the protected status of these intelligent creatures in the world today.
A look at snow leopards, including their habitats, physical characteristics such as their retractable claws, behaviors, relationships with humans, and their ability to survive changing climates in the world today.
A look at a common food chain in the Pacific Ocean, introducing the plankton that starts the chain, the killer whale that sits atop the chain, and various animals in between.
A look at a common food chain on a North American prairie, introducing the bluestem grass that starts the chain, the badger that sits atop the chain, and various animals in between.
A look at a common food chain in a South American rainforest, introducing the cacao tree that starts the chain, the jaguar that sits atop the chain, and various animals in between.
A look at a common food chain in the Arctic tundra, introducing the Arctic willow that starts the chain, the wolf that sits atop the chain, and various animals in between.
A look at a common food chain in a North American desert, introducing the mesquite tree that starts the chain, the coyote that sits atop the chain, and various animals in between.
A look at a common food chain in the Rocky Mountains, introducing the ponderosa pine tree that starts the chain, the mountain lion that sits atop the chain, and various animals in between.
A narration of the origins, advancements, and future of the life sciences, including botany and zoology, and the ways in which scientists utilize the scientific method to explore questions.