Green energy for carbon neutral ecosystem poster

Moses Jeremiah Barasa Kabeyi* and Oludolapo Akanni Olanrewaju • Industrial Engineering Department, Durban University of Technology, Durban, South Africa The greatest sustainability challenge facing humanity today is the greenhouse gas emissions and the global climate change with fossil fuels led by coal, natural gas and oil contributing 61.3% of global electricity generation in the year 2020. The cumulative effect of the Stockholm, Rio, and Johannesburg conferences identified sustainable energy development (SED) as a very important factor in the sustainable global development. This study reviews energy transition strategies and proposes a roadmap for sustainable energy transition for sustainable electricity generation and supply in line with commitments of the Paris Agreement aimed at reducing greenhouse gas emissions and limiting the rise in global average temperature to 1.5°C above the preindustrial level. The sustainable transition strategies typically consist of three major technological changes namely, energy savings on the demand side, generation efficiency at production level and fossil fuel substitution by various renewable energy sources and low carbon nuclear. For the transition remain technically and economically feasible and beneficial, policy initiatives are necessary to steer the global electricity transition towards a sustainable energy and electricity system. Large-scale renewable energy adoption should include measures to improve efficiency of existing non...

• Review Article • 01 November 2021 Blue carbon as a natural climate solution • ORCID: orcid.org/0000-0001-7362-0882 • ORCID: orcid.org/0000-0002-4849-2628 • ORCID: orcid.org/0000-0001-7153-5190 • • • • ORCID: orcid.org/0000-0002-2219-6855 • ORCID: orcid.org/0000-0002-5973-0046 • … • ORCID: orcid.org/0000-0002-1213-1361 Show authors Nature Reviews Earth & Environment volume 2, pages 826–839 ( 2021) Blue carbon ecosystems (BCEs), including mangrove forests, seagrass meadows and tidal marshes, store carbon and provide co-benefits such as coastal protection and fisheries enhancement. Blue carbon sequestration has therefore been suggested as a natural climate solution. In this Review, we examine the potential for BCEs to act as carbon sinks and the opportunities to protect or restore ecosystems for this function. Globally, BCEs are calculated to store >30,000 Tg C across ~185 million ha, with their conservation potentially avoiding emissions of 304 (141–466) Tg carbon dioxide equivalent (CO 2e) per year. Potential BCE restoration has been estimated in the range of 0.2–3.2 million ha for tidal marshes, 8.3–25.4 million ha for seagrasses and 9–13 million ha for mangroves, which could draw down an additional 841 (621–1,064) Tg CO 2e per year by 2030, collectively amounting to ~3% of global emissions (based on 2019 and 2020 global annual fossil fuel emissions). Mangrove protection and/or restoration could provide the greatest carbon-related benefits, but better understanding of ot...

Print By Daniel Zhang The sky is not the limit. As organizations worldwide chart the best course for mitigating greenhouse gas (GHG) emissions, the largest among us have not only the opportunity but also the responsibility to make a far bigger impact than we have to help limit the climate crisis. We can’t merely meet established guidelines. We must go above and beyond. As a global digital infrastructure provider and platform company, Alibaba represents millions of brands and billions of consumers. That puts us in a unique position to establish a robust sustainability framework appropriate to our size and market presence that can guide us to meaningfully address the climate challenges and help build a sustainable future. • Scope 1 targets direct GHG emissions from such company-owned sources as vehicles, boilers and furnaces, and production machinery. • Scope 2 accounts for emissions from electricity a company purchases from external sources and consumes. • Scope 3 accounts for other indirect emissions up and down throughout a company’s value chain resulting from such activities as resource extraction, transportation of fuels, and the use of its products and services. While these three scopes provide a strong framework for organizations to meet GHG emission goals, the largest global organizations can—indeed, we must—push beyond this blueprint for carbon neutrality to help achieve significant change. Alibaba has committed to join the Science-Based Targets initiative (SBTi) to...

Our world is changing faster than anyone predicted. Already, freshwater supplies are shrinking, agricultural yields are dropping, our forests are burning, and rising oceans are more acidic—all, in part, due to a warming climate. As our natural world changes around us, so does our way of life. Coastal home values drop as insurance premiums rise; drought reduces feed for American farmers’ cattle and water for their crops; more pollen and dust in the air aggravates asthma and allergies in kids and adults alike. At WWF, we believe we can fight Achieving this future will require action by everyone, and we are already well on our way. People are using their collective voices to demand change. Businesses are making investments in clean energy, already creating local jobs and stronger economies. Communities are redesigning their roads, buildings, airports, and railroads to make them climate resilient. And nations around the world are committed to delivering on a landmark global plan to curb climate change, known as the For decades, WWF has engaged with millions of Americans, leading businesses, and government leaders to prepare for inevitable change and reduce the emissions that drive climate change. A new report by an international body of scientists exposes the sheer gravity of the climate crisis and the increasingly severe climate impacts facing people and nature. To drive home the impacts on nature, WWF created a new version that incorporates plants and animals to highlight ho...

To avert the worst impacts of climate change, from extreme flooding to devastating droughts, the world will need to cap global warming at 1.5 degrees Celsius, according to the latest United Nations At the XLIV (44th) MIT "We meet at a time when the urgent need to transition to a net-zero-greenhouse-gas-emitting world is made even more complex by the global COVID-19 pandemic, the premature acceleration of climate extremes, and now the Russian invasion of Ukraine,” said MIT Joint Program Director Here, with permission from all speakers, we summarize key points from this year’s Forum presentations. Carbon Budgets The first session explored the concept of carbon budgets and how it can be applied in the design of strategies aimed at achieving net-zero-emissions. One common definition of a carbon budget is “the total net amount of carbon dioxide (CO 2) that can still be emitted by human activities while limiting global warming to a specified level.” The impetus for estimating the Earth’s “remaining-carbon budget” is that concentrations and growth rates of CO 2—the main driver of long-term anthropogenic climate change—are the highest they’ve been in millions of years. The latest IPCC Report estimates that there’s a 50% probability that we can limit global warming to 1.5°C (or 2°C) starting in 2020 with a carbon budget of about 500 gigatons (Gt) (or 1,350 Gt) of CO 2. Another carbon budget definition quantifies exchanges and storage of carbon between and within global land, ocean ...