🔋China is Building Gravity Batteries

Check out this week's top 5 IE Originals videos, featuring the most fascinating stories in science, engineering, and tech.

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China is Building Gravity Batteries

The push for renewable energy sources has birthed a new problem: where will we store all that energy? What happens if the sun isn't up, there is no wind, but the city still needs power? This new technology just might be the answer: gravity batteries.

Old School Power vs. Stealth: F-15 vs. F-22

USAF fighter evolution reflects a constant drive for air supremacy, from the unmatched speed and climb rate of the F-15 Eagle to the stealth, agility, and sensor fusion of the F-22 Raptor. The F-15, introduced during the Cold War, became a symbol of air dominance with an undefeated combat record.

Las Vegas Architecture is Ingenious, but is it Good?!

From 1989 to 1999 Las Vegas went through a massive change. The city had gone from being one of glits and glamour, neon signage, and showgirls, to family vacations, giant castles, pyramids and rollercoasters.

PzH 2000 vs M109: Which Self-Propelled Howitzer Reigns Supreme

Self-propelled howitzers are the steel backbone of modern artillery warfare—combining raw firepower with battlefield mobility to deliver devastating strikes deep behind enemy lines. Leading the charge are two legendary systems: the German PzH 2000 and the American M109. Though built decades apart and shaped by different doctrines, both have evolved into dominant forces on the modern battlefield.

Why China's Spending $70bn to Move Water 2,700 Miles

China is in the process of creating possibly the biggest infrastructure project ever attempted. The South to North Water Transfer Project is designed to move water from rivers in the wet south of the country, to dry, densely populated areas in the north. However, the project has widely been criticised, not only for displacing large amount of people, but also for tapping into waterways that service other countries in South-East Asia, and India.