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trilhos de alta precisão

Brasil tem minério e siderurgia avançada, mas importa trilhos de alta precisão da China. Entenda as razões dessa dependência.

Why Does Brazil, Owner of Large Mineral Reserves and Advanced Steel Mills, Still Depend on China for High-Precision Railway Tracks?

Alisson Ficher 13/08/2025 at 07:22

Most commented

10

Engineers want to carve through Africa with a giant canal to bring water from the world’s second-largest river to a dying lake on the edge of the Sahara Desert that has already lost 90% of its water.

Bruno Teles 08/06/2026 at 17:23

9

Interesting facts

A giant brown band visible from space, approximately 8,850 kilometers long, connected Africa to America in the Atlantic Ocean, and satellites revealed that it is neither land nor pollution, but the largest accumulation of seaweed in the world, which broke records in 2025.

Bruno Teles 08/06/2026 at 00:09

6

Interesting facts

Workers were opening a modern road in Dover when they found, 6 meters below the asphalt, a 3,500-year-old boat made of stitched oak and plant fibers.

Flavia Marinho 05/06/2026 at 20:50

3

Instead of burning or burying old tires, an American city is transforming about 2,000 of them into the street itself, paving its first sections with a quieter and more durable rubber asphalt.

Bruno Teles 09/06/2026 at 20:50

3

Interesting facts

In just one cast, fishermen are surprised to capture 14,096 mullets in Bombinhas and close a historic season with 58,000 fish; scene recorded in the Santa Catarina paradise marks the last day of the 2026 season.

Felipe Alves da Silva 08/06/2026 at 22:29

2

Science and Technology

Russia brings to life a prototype of a supersonic passenger jet and aims for the return of commercial flights above the speed of sound with the promise of less noise near airports.

Fabio Lucas Carvalho 05/06/2026 at 16:59

2

Motorcyclist sees excavator arriving at the edge of a river in Bosnia, calls neighbors in minutes and turns a hydroelectric project into a resistance lasting more than 10 years with five expired concessions.

Flavia Marinho 07/06/2026 at 15:17

Brazil filled the Northeast with wind turbines but now faces the side effect of 705 giant blades reaching the end of their lifespan by 2032 just in Rio Grande do Norte, while the world projects 43 million tons of waste by 2050.
12/06/2026 by Melvyn

End-of-life should be factored in at the beginning not at…
China has deployed snake-shaped robots to slide along power lines, where they have already inspected over 130 kilometers of cables using cameras and sensors to detect damaged wires, worn-out parts, and overheating.
12/06/2026 by Malik

Outstanding innovation for effectiveness and safety for men and infrastructure
A giant brown band visible from space, approximately 8,850 kilometers long, connected Africa to America in the Atlantic Ocean, and satellites revealed that it is neither land nor pollution, but the largest accumulation of seaweed in the world, which broke records in 2025.
12/06/2026 by Kay

One thing this article did not cover. Once it reaches…
Engineers want to carve through Africa with a giant canal to bring water from the world’s second-largest river to a dying lake on the edge of the Sahara Desert that has already lost 90% of its water.
12/06/2026 by LYDIA

Why not build the canal from River Benue to Lake…
Elevator mechanics become a rare commodity in the vertical world: the lack of qualified professionals pressures buildings, subways, hospitals, and airports, while salaries exceed $100,000 per year and companies rush to train new specialists.
12/06/2026 by deepak singh

Thanks for providing this great information. But if you want…
A giant brown band visible from space, approximately 8,850 kilometers long, connected Africa to America in the Atlantic Ocean, and satellites revealed that it is neither land nor pollution, but the largest accumulation of seaweed in the world, which broke records in 2025.
12/06/2026 by Seth

Looks like a skid mark
Russia brings to life a prototype of a supersonic passenger jet and aims for the return of commercial flights above the speed of sound with the promise of less noise near airports.
11/06/2026 by António

Great. Lovely.

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