Walking Sideways

Author: Judith S. Weis
Publisher: Cornell University Press
ISBN: 0801465605
Format: PDF, Kindle
Download Now
The world's nearly 7,000 species of crabs are immediately recognizable by their claws, sideways movement, stalked eyes, and thick outer shells. These common crustaceans are found internationally, thriving in various habitats from the edge of the sea to the depths of the ocean, in fresh water or on land. Despite having the same basic body type as decapod crustaceans-true crabs have heavy exoskeletons and ten limbs with front pincer claws-crabs come in an enormous variety of shapes and sizes, from the near microscopic to the giant Japanese spider crab. In Walking Sideways, Judith S. Weis provides an engaging and informative tour of the remarkable world of crabs, highlighting their unique biology and natural history. She introduces us to recently discovered crabs such as the Yeti crab found in deep sea vents, explains what scientists are learning about blue and hermit crabs commonly found at the shore, and gives us insight into the lifecycles of the king and Dungeness crabs typically seen only on dinner plates. Among the topics Weis covers are the evolution and classification of crabs, their habitats, unique adaptations to water and land, reproduction and development, behavior, ecology, and threats, including up-to-date research. Crabs are of special interest to biologists for their communication behaviors, sexual dimorphism, and use of chemical stimuli and touch receptors, and Weis explains the importance of new scientific discoveries. In addition to the traditional ten-legged crabs, the book also treats those that appear eight-legged, including hermit crabs, king crabs, and sand crabs. Sidebars address topics of special interest, such as the relationship of lobsters to crabs and medical uses of compounds derived from horseshoe crabs (which aren't really crabs). While Weis emphasizes conservation and the threats that crabs face, she also addresses the use of crabs as food (detailing how crabs are caught and cooked) and their commercial value from fisheries and aquaculture. She highlights other interactions between crabs and people, including keeping hermit crabs as pets or studying marine species in the laboratory and field. Reminding us of characters such as The Little Mermaid's Sebastian and Sherman Lagoon's Hawthorne, she also surveys the role of crabs in literature (for both children and adults), film, and television, as well in mythology and astrology. With illustrations that offer delightful visual evidence of crab diversity and their unique behaviors, Walking Sideways will appeal to anyone who has encountered these fascinating animals on the beach, at an aquarium, or in the kitchen.

Controversies in Science Technology

Author: Daniel Lee Kleinman
Publisher: Oxford University Press (UK)
ISBN: 0199383774
Format: PDF, ePub
Download Now
When it comes to any current scientific debate, there are more than two sides to every story. Controversies in Science and Technology, Volume 4 analyzes controversial topics in science and technology-infrastructure, ecosystem management, food security, and plastics and health-from multiple points of view. The editors have compiled thought-provoking essays from a variety of experts from academia and beyond, creating a volume that addresses many of the issues surrounding these scientific debates. Part I of the volume discusses infrastructure, and the real meaning behind the term in today's society. Essays address the central issues that motivate current discussion about infrastructure, including writing on the vulnerability to disasters. Part II, titled "Food Policy," will focus on the challenges of feeding an ever-growing world and the costs of not doing so. Part III features essays on chemicals and environmental health, and works to define "safety" as it relates to today's scientific community. The book's final section examines ecosystem management. In the end, Kleinman, Cloud-Hansen, and Handelsman provide a multifaceted volume that will be appropriate for anyone hoping to understand arguments surrounding several of today's most important scientific controversies.

Marine Pollution

Author: Judith S. Weis
Publisher: Oxford University Press, USA
ISBN: 0199996687
Format: PDF, Kindle
Download Now
Marine pollution occurs today in varied forms - chemical, industrial, and agricultural - and the sources of pollution are endless. In recent history, we've seen oil spills, untreated sewage, eutrophication, invasive species, heavy metals, acidification, radioactive substances, marine litter, and overfishing, among other significant problems. Though marine pollution has long been a topic of concern, it has very recently exploded in environmental, economic, and political debate circles; scientists and non-scientists alike continue to be shocked and dismayed at the sheer diversity of water pollutants and the many ways they can come to harm our environment and our bodies. In Marine Pollution: What Everyone Needs to Know, Judith Weis covers marine pollution from many different angles, each fascinating in its own right. Beginning with its sources and history, the book describes in detail each common pollutant, why exactly it is harmful, why it may draw controversy, and how we can prevent it from destroying our aquatic ecosystems. Weis discusses topics like what actually happened with the Exxon Valdez, and why Harmful Algal Blooms are a serious concern. Later chapters will discuss pollutants that are only now surfacing as major threats, such as pharmaceuticals, personal care products, and metal nanoparticles, and explain how these can begin in the water and progress up the food chain and emerge in human bodies. The book's final section will discuss the effects of climate change and acidification on marine pollution levels, and how we can reduce pollution at the local and global levels.

Horses Never Lie about Love

Author: Jana Harris
Publisher: Simon and Schuster
ISBN: 9781451605860
Format: PDF, Mobi
Download Now
The heartwarming true story of a woman and the horse who changed her life. Jana Harris had always dreamed of having a horse farm, and she knew the horse on whom she could build her dreams the moment she saw her on a ranch in the Eastern Mountains of Washington State, where a herd had been corralled to be sold: a beautiful, deep dark red-colored mare standing about sixteen hands, with a white star on her pretty head. Something about the way this mare guarded her handsome foal spoke to Harris. The mare was named True Colors. When True Colors was delivered to Harris’s ranch three months later, however, she was unrecognizable: head-shy from the infected sores on her face, and lungs damaged by pneumonia, she sensed demons hiding in everything from the scent of fabric softener on clothes to a gate in a fence. This injured, traumatized horse existed between two worlds—wild and domesticated—and belonged to neither. Remarkably, the other horses fell in love with her on sight. And true to her name, True Colors would never pretend to be something she was not; with her wise, intuitive nature, she would end up changing the lives of everyone she encountered. This is the story of True Colors and how, with her quiet wisdom, she became the heart of the range and farm. There is a famous horseman’s saying: A horse never lies about its pain. But maybe we should also consider: A horse never lies about love.