Metals are present everywhere around us and are one of the major materials upon which our economies are built. Economic development is deeply coupled with the use of metals. During the 20th century, the variety of metal applications in society grew rapidly. In addition to mass applications such as steel in buildings and aluminium in planes, more and more different metals are in use for innovative technologies such as the use of the speciality metal indium in LCD screens. A lot of metals will be needed in the future. It will not be easy to provide them. In particular in emerging economies, but also in industrialised countries, the demand for metals is increasing rapidly. Mining and production activities expand, and with that also the environmental consequences of metal production. In this course, we will explore those consequences and we will also explore options to move towards a more sustainable system of metals production and use. We will focus especially on the options to reach a circular economy for metals: keeping metals in use for a very long time, to avoid having to mine new ones. This course is based on the reports of the Global Metals Flows Group of the International Resource Panel that is part of UN Environment. An important aspect that will come back each week, are the UN Sustainable Development Goals, the SDGs. Those are ambitious goals to measure our progress towards a more sustainable world. We will use the SDGs as a touching stone for the assessment of the metals challenge, as well as the solutions we present in this course to solve that challenge.

El mundo enfrenta hoy el titánico reto de alimentar a una población creciente en un contexto de cambio climático y con mayores presiones sobre los ecosistemas naturales. En particular, las proyecciones indican que el consumo de carne a nivel mundial se duplicará en los próximos 20 años por el incremento de la población, del ingreso y por cambios en los patrones de consumo. La demanda para carne de calidad seguirá incrementando a una tasa del 5% anual en países en desarrollo durante las próximas cuatro décadas con lo cual la presión sobre los bosques no desaparecerá. A la par, el desarrollo de la ganadería representa una fuente de alimento y recursos económicos para miles de familias rurales. En números llanos, una tercera parte de la población mundial depende de la agricultura para su supervivencia y el 60% de los agricultores también son ganaderos. La ganadería proporciona ingresos y alimento a mil millones de personas pobres y para muchos campesinos en condición de pobreza, el ganado es una fuente de energía como fuerza de tiro, un medio de transporte, una fuente esencial de fertilizante orgánico para cultivos agrícolas, provee subproductos como la lana y el cuero, y funge como un mecanismo de ahorro y capital en momentos de necesidad económica, por ejemplo mediante la venta o el intercambio de un animal en caso de ser necesario. En este curso, ofrecido por la UNAM, se abordan los beneficios y retos de la ganadería y la necesidad de transitar hacia nuevos esquemas de producción más amigable con el ambiente. Asimismo, profundiza en los sistemas agrosilvopastoriles como alternativas productivas sociales y ambientalmente viables, así como rentables que no sólo repercuten en el bienestar a nivel local sino que contribuyen al cumplimiento de metas globales de desarrollo sostenible. A lo largo del curso, se presentarán conceptos clave tales como “ganadería climáticamente inteligente”, “buenas prácticas ganaderas”,“manejo integral del paisaje” y los “servicios ecosistémicos”.

What do you picture when you hear the term “renewable energy?” Do you imagine fields of solar panels, giant windmills, or huge hydroelectric dams? Those are all examples of large-scale, grid-tied systems. In this course, we’ll go much smaller and focus on off-grid, stand-alone systems. We will explore the key components of photovoltaic, wind, and hydroelectric systems. We will examine photovoltaic, or PV, system components, and the scientific laws essential to understanding how renewable energy systems work. We will discuss wind energy and low-head hydroelectric systems, focusing on small-scale implementations. During our exploration of these systems, we will focus on safety and regulating bodies that guide proper system design. Throughout the course, you will be able to apply what you’re learning by conducting an energy audit to analyze power consumption, identifying essential system components of small-scale systems, building a budget for a small-scale system design, and creating a design for implementing a small-scale system.

This course explores why climate change adaptation is important in the African context. Africa is considered one to be one of the most vulnerable regions to climate change. Historically, climate-related hazards such as drought, flooding, pest and disease outbreaks, coastal storms and heat waves have had devastating impacts on people and the environment in which they live. Often the damage knocks back progress that has been made in social and economic development, slowing down the achievement of development goals. Climate models suggest that many of these climatic hazards will intensify as the global climate warms. Building resilience to climate risks, through adaptation, is critically important for future development in Africa. The course will examine adaptation in theory and in practice, through a focus on four sectors that are critically important for climate resilient development in Africa: Water Security, Agriculture and Food Security, Ecosystems and Ecosystem Services and Resilient Cities.

Mountains 101­­ is a broad and integrated overview of the mountain world. This 12-lesson course covers an interdisciplinary field of study focusing on the physical, biological, and human dimensions of mountain places in Alberta, Canada, and around the world. Specifically, we'll study the geological origins of mountains, how they’re built-up and worn-down over time; we’ll learn about their importance for biodiversity and water cycles, globally and locally; we’ll explore their cultural significance to societies around the globe, and how that relationship has evolved over time; and we’ll learn how mountains are used, how they’re protected, and how today they’re experiencing rapid change in a warming climate. At the end of each lesson, Mountains 101 will also provide learners with some smart tricks -- Tech Tips -- to safely enjoy time in the high alpine environment: from how to pick the best footwear for hiking to making smart decisions in avalanche terrain. We’ll be delivering your online lessons from valley bottoms to mountaintops, from museums and labs, to alpine huts and other spectacular alpine sites, and we’ll do so with the help of a whole host of experts. We invite you to join us for this online adventure! The mountains are calling...

Journey of the Universe weaves together the discoveries of the evolutionary sciences together with humanities such as history, philosophy, art, and religion. This course draws on the Journey of the Universe Conversations, a series of 20 interviews with scientists and environmentalists. The first 10 interviews are with scientists and historians who deepen our understanding of the evolutionary process of universe, Earth, and humans. The second 10 interviews are with environmentalists, teachers, and artists who explore the connections between the universe story and the practices for a flourishing Earth community.

The central question of this course: “why study wood?” If “why study wood” is the question, one answer would be that it is the only raw material available to us that is truly renewable in human life span terms. Wood is as important to society today as it ever was, despite the development of many man-made substitute materials, changing resource availability, and the changing needs of society. Some items on the list of wood products stay the same (lumber, plywood and veneer for building construction, furniture, shipping pallets & crates and other containers & packaging materials, railroad ties, utility poles, chemical feed stocks, etc), but the list also keeps changing to meet new needs and challenges as the resource changes. In short, wood is a far more diverse, green, and renewable resource than you might have imagined. Join us to learn about the important role of wood in human history, civilization, and our future. By the end of the course, learners will be able to: - describe wood as a raw material and its critical importance to the world economy, and the lives of the people that make that economy work. - identify the projected trend for wood consumption to continue to grow in the coming years, despite the image of wood as a "low tech" material. - identify the ways in which wood's properties can lead to its efficient and sustainable use. -identify wood's positive role in boosting the world economy and ability to lead to unexpected vocations.

Learn about diverse and integrated markets for primary energy, and the essential considerations driving business leaders and policy makers in development of global energy resources.

This course will cover the agricultural and urban water quality issues in Florida, their bases, land and nutrient management strategies, and the science and policy behind the best management practices (BMPs). Students will learn to evaluate BMP research and analyze its role in determining practices and policies that protect water quality.

Are you ready to take an incredible journey around Planet Earth and beyond? In this course, you will delve into a world of innovative science and learn from a team of Biosphere 2 and University of Arizona researchers. From plants and soils, to oceans and rainforests, the Moon, Mars, and more, this course is an exciting opportunity for anyone interested in science and Earth stewardship. Learn how a unique research station in the Arizona desert is used to investigate big ideas, such as how Earth systems interact, the effects of climate change, and what our future holds. Go back in time thousands of years with information locked in ancient trees, and travel into an imagined future where humans become Martians. Collect and analyze your own scientific data, discuss big questions with participants from around the world, and gain novel insights and understanding about our wonderfully unique planet.