and is compounds of silicon and other chemical elements. The two most common silicate types found in the Earth’s crust are quartz and feldspar minerals. Quartz, also calledsilicon dioxide, contains silicon and oxygen and has types that are both clear and colored, such as: ...
According to The Ellen Macarthur Foundation4, the root cause of all this waste is the current structure of the economy: we take materials from the earth, make products from them, and eventually throw them away as waste. The foundation advocates a transition from this so...
Planet Earth is made up of four overlapping subsystems that contain all of world’s land masses, water sources, living organisms, and gases. These four subsystems are known as spheres. Geographers break down the Earth’s systems into four spheres that make up the world’s air (atmosphere),...
The upshot of building a bigger rocket is pretty straightforward: heavier payloads and greater range. When it's done, Starship might be able to wrestle up to 250 tons intolow-Earth orbitin an expendable configuration or 150 tons with Super Heavy recovery. SpaceX is also working on orbital ...
we’ll tell you what you should be recycling in South Africa. While recycling seems fairly simple, there are nuances to the trash game. Just like products contain multiple ingredients, packaging is composed of different materials – some of them not being recyclable, which is often overlooked. ...
"There's a fundamental juncture in the history of really any civilization on a single planet, which is, do you get to the second planet, or do you not?" The ship would be spacious enough for 100 passengers, along with their luggage, plus the materials to build homes, businesses, rocket...
Sourcing sustainable materials, like those in this Singapore green building, can count toward a company’s ESG rating. ESG (environmental, social, and corporate governance) investing is a tool that investors use to measure the nonfinancial issues of a company and understand how it manages externali...
In simple descriptions of the atom, we often talk about electrons "orbiting" the nucleus like planets going around the Sun or satellites whizzing around Earth, although that's a huge oversimplification. Note also that this picture isn't drawn to scale! Most of an atom is empty space. If ...
In 2014, NASA'sFermi Gamma-ray Space Telescopemade maps of the heart of our galaxy, theMilky Way, in gamma-ray light, revealing an excess of gamma-ray emissions extending from its core. "The signal we found cannot be explained by currently proposed alternatives and is in close agreement wi...
The steam locomotive. The prototype, known as Stephenson's Rocket and introduced in 1829, served for the next 150 years as a template for the production of vehicles to haul raw materials and finished products.10 The steamboat. The transport of goods and people was greatly expanded and speeded...