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A Journey through Climate History

Related:  Earth Sciencesearth science

Garbage If your habits resemble those of average Americans, you generate about 4.6 pounds of solid trash per day. This adds up to big trouble for the environment. Americans are generating waste products faster than nature can break them down and using up resources faster than they can be replaced. How can we find ways to meet our current economic and social needs without compromising the ability of our children, and our children's children, to do the same?

Biogeochemical cycles Biogeochemical cycles are pathways for the transport and transformation of matter within four categorical areas that make up planet Earth (biosphere, hydrosphere, lithosphere, and the atmosphere). Source. Biogeochemical cycles are components of the broader cycle that govern the functioning of planet Earth. The Earth is a system open to electromagnetic radiation from the sun and outer space, but is a virtually closed system with regard to matter. This means that the planet has minimal flux of matter, other than meteorite collisions and minor amounts of intergalactic particle trapping (or loss) by the upper atmosphere. Therefore, matter that Earth contained from the time of its birth is transformed and circulated geographically.

Five Science Videos That Make You Think About Ethics, Habitat and Climate Change There’s an abundance of science videos on the internet, but not all equally amazing. Offering an eclectic mix of cool science videos, Science Today producer Molly Michelson recommends five of her favorite clips. When wandering around a natural history museum, it may seem wrong or cruel to see animal specimens displayed. The ethics of continued collecting practices are a hot topic among biologists, but the debate has largely skipped the general population. This Brain Scoop video explains why it’s necessary for biologists to keep collecting species and the precautions they take to prevent long term negative effects on species populations.

Weather New Englanders have a saying: "If you don't like the weather, just wait a minute." Weather forecasts may be more stable in other parts of the world, but the basic idea stands. Weather is dynamic, the product of interacting forces we are only beginning to understand. Witness the weather extremes caused by El Niño in 1997 and 1998. El Niño raised water temperatures in the Pacific and the effects were felt worldwide: crop failures, disease outbreaks, excess snow, or too little rain.

Your insight into science From the deep sea vents of the Cayman Trough to the shield volcanoes of the Hawaiian islands, Earth Scientists explore the structures and processes that define our world, the forces that continue to sculpt it, and how these processes have interacted over the last 4.6 billion years of Earth’s history. Our Earth science modules introduce how scientists use detailed observations, modeling, and comparative studies to develop their understanding of plate tectonics, the foundational theory of the Earth sciences, as well as biogeochemical cycles, the structure of the Earth and its atmosphere, and rocks and minerals. This module addresses the rock cycle, including the historical development of the concept. The relationships between uniformitarianism, the rock cycle, and plate tectonics are explored both generally and through the specific example of the Cascade Range in the Pacific Northwest. Powered by the sun, water constantly cycles through the Earth and its atmosphere.

Hands-on Activities for Teaching Biology to High School or Middle School Students by Drs. Ingrid Waldron and Jennifer Doherty, University of Pennsylvania The expression "hands-on, minds-on" summarizes the philosophy we have incorporated in these activities - namely, that students will learn best if they are actively engaged and if their activities are closely linked to understanding important biological concepts. Many of our activities are explicitly aligned with the Next Generation Science Standards, as indicated by (NGSS) in the descriptions below and the links to the right.

Paris 2015 – Views & Research – The Conversation What does the OECD's decision to limit finance for coal power stations mean for coal producers such as Australia? The Paris climate talks will now take place within a state of emergency that is threatening to limit public participation. Don't look to politicians and high finance, it's pressure from below that will be the driver of change.

One Ocean: The Nature of Things with David Suzuki: CBC-TV One Ocean Download Unity Web Player Get Unity 3D to Play The Unity Web Player enables you to view blazing 3D content created by the Unity gaming engine directly in your browser, and autoupdates as necessary. Download Unity Web Player: Install Now! Faculty of Science / Current students / Educational resources National Science Week posters National Science Week (NSW) is a countrywide celebration of science which aims to highlight the importance of science in people's daily lives. The theme for 2012 is"The Role of Science in Economic Development". This annual country-wide event is led by the Department of Science and Technology (DST), and supported by the South African Agency for Science and Technology Advancement (SAASTA). It is aimed at highlighting the important role science plays in everyday life and attracting the country's youth to enter and remain in science related studies and careers. The Science Faculty at UCT has for the last six years participated in NSW by producing high quality, scientifically up-to-date posters which are distributed to schools and used as a resource for teachers, learners and educators.

Don't Feed the Plants! Everyone should be familiar with the genus Dionea or "Venus Fly Trap" above, but the vegetative world is home to plenty stranger, and while perhaps not as adrenaline-pumping as Crustaceans or as gruesome as Amphibians, plants provide food, shelter and oxygen for the entire kingdom Animalia, so they certainly deserve the spotlight once in a while, and their weirdness does not disappoint. Rather unremarkable in appearance from above, these tiny aquatic plants are actually carnivorous, and display one of the most sophisticated mechanisms (carnivorous or otherwise) in the entire known plant kingdom. The "bladders" of the plant's namesake are thousands of tiny, sac-like pods which hang from submerged branches, each equipped with a hinged "door" and membranous seal held shut by a delicate equilibrium of pressure. At the slightest touch by some tiny insect, crustacean or even protozoa, the seal is broken and the bladder floods with water, sucking in the prey for digestion.

theconversation There are those who say the climate has always changed, and that carbon dioxide levels have always fluctuated. That’s true. But it’s also true that since the industrial revolution, CO₂ levels in the atmosphere have climbed to levels that are unprecedented over hundreds of millennia. So here’s a short video we made, to put recent climate change and carbon dioxide emissions into the context of the past 800,000 years. The temperature-CO₂ connection Earth Exploration Toolbook Awarded Science Magazine's Science Prize for Online Resources in Education (SPORE), September 30, 2011 AAAS Press Release What is the Earth Exploration Toolbook?