The 1970s energy crisis was among the most important economic events of the late 20th century
It changed how countries saw energy security, and it set in motion long-term changes in policy, car design, and personal energy use
The crisis did not emerge overnight but evolved over time, with multiple underlying factors working together
Countries all around the globe were getting increasingly dependent on oil. After World War II, Western Europe and the United States needed larger and larger quantities of oil to fuel their growing economies
Cars filled the roads, factories expanded, and people heated their homes with oil. This made Western countries extremely reliant on foreign oil, especially Middle Eastern oil
For decades prior to the crisis, oil prices were low and stable. This was the case because a small group of big Western oil companies, often called the "Seven Sisters," worked with friendly governments to keep prices low
The steady supply of cheap oil drove economic growth quickly in the West during the 1950s and 1960s
Chinese scientists developed an algorithm that turns drones into a smart swarm, allowing them to lift heavy loads together and navigate obstacles for deliveries and rescue missions
Water seeping into coconuts isn't something most people think about on a daily basis, but it's something that has been happening in nature for hundreds and hundreds of years
Coconuts are made by coconut palm trees, and the water that you can find in coconuts doesn't just magically appear
It's a byproduct of the way the trees interact with the world around them to draw water from the ground and transport it up to the fruits
When an aircraft stalls, it stops flying properly and starts descending because the wings are not providing enough lift to keep it aloft. This happens for a few reasons, especially those that have to do with how the air flows along the wings, and it's something that pilots need to be aware of to stay safe
Stalls don't just happen for no reason because there are a series of things that contribute to a stall, including speed, wing shape, and how the plane enters the air
Lift is what keeps an airplane in the air, and it's generated by the wings as air flows over them. The curved upper surface and flat bottom of the wing make air flow faster over the top than it does on the bottom
The faster the air is moving, the lower the pressure is, and it is the difference in pressure on the top and bottom of the wing that creates the lift. However, this will only work if air has a smooth course over the surface of the wing. If that smoothness is interrupted, lift will be reduced, and the plane will have a lot more difficulty staying airborne