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- Sand mining: how it impacts the environment and solutions | World . . .
Sand mining has tripled in the past two decades, with demand reaching 50 billion tonnes a year in 2019, according to the United Nations Environment Programme (UNEP) Indeed, the volume of sand and gravel used each year is enough to build a wall around the equator measuring 27 metres high by 27 metres wide
- Ash from Mount Etna could be the next eco-friendly building material . . .
A 2018 WWF report suggests that aggregate (sand and gravel) is the most mined material in the world - all with implications for the environment and our planet Indeed, a 2017 perspective in the journal Science suggests that overexploitation of sand is not just damaging to the environment, but also endangers communities and risks violent conflict
- Global sustainable resource consumption needed urgently, UN report says . . .
Global natural resource consumption is forecast to rise 60% by 2060, compared with 2020 levels, according to the United Nations
- How to provide safe water to billions of people by 2030
Household water treatment options include everything from chlorine drops to biosand filters (filters that mimic nature to remove pathogens, using sand, gravel and a biological system) When people learn about and start using household water treatment for themselves and their families, it transforms their lives and provides an immediate solution to an immediate need
- 3 steps to build adaptive smart cities of the future
Use cases have included self-driving cars, smart lighting, and even smart trash cans Sensors and data are indeed the building blocks, like cement, air, water, sand, and gravel are for concrete, but they represent raw ingredients, not the ultimate solution
- Sand motors can reduce coastal erosion | World Economic Forum
Using millions of tonnes of sand, engineers create sand motors by extending a section of the shoreline out into the sea, creating an artificial peninsula The ocean’s wave action acts as a "motor" that pushes the sand along the coastline as time passes As a result, the beach gradually regenerates and the coast is protected from erosion
- Scientists have proposed three colossal geoengineering projects to slow . . .
The wall would be made up of gravel and sand piled up on the sea bed to create an artificial embankment, and would be clad in concrete to stop erosion This won't help with the problem of warm air reaching the top of the glacier, but sea melting happens much quicker and less predictably
- Climate, nature and energy at Davos 2025 - The World Economic Forum
Themes that have emerged over the week included the fact that we're beginning to see the full effects of climate change, and that we can expect worse in coming years and decades; the need to speed up climate activity, particularly mitigation but also in the short term, adaptation; the growing costs of inaction; the urgency to include indigenous knowledge as we seek to restore the Earth; the
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