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cristalografia

Cristal analisado sob microscópio exibe padrão óptico “mosaico” — mistura de azul, amarelo e roxo — observado em Quixeramobim (CE) por pesquisador da UFC.

Science and Technology

Rare Crystals Discovered in Ceará Show Unseen Optical Effect and Could Forever Change Light Science and Technology

Caio Aviz 21/09/2025 at 00:28

Most commented

2

Mother and daughter build a 70 m² house with more than 8,000 discarded glass bottles and impress with their creativity; known as the Casa de Sal, the property is located on Itamaracá Island, in Pernambuco.

Andriely Medeiros de Araújo 11/06/2026 at 20:43

1

Interesting facts

The river that “dies” in the desert never reaches the sea and yet gives life to one of Africa’s largest natural refuges in a truly impressive way.

Romário Pereira de Carvalho 11/06/2026 at 13:11

1

He transformed an abandoned plastic water tank into an underground house in the “hobbit hole” style, using only repurposed pallet wood, without heavy machinery or expensive labor.

Valdemar Medeiros 14/06/2026 at 00:35

2

Libya built over 4,000 kilometers of underground pipelines to bring water from the Sahara to coastal cities in a project that the government itself called the Eighth Wonder of the World.

Bruno Teles 15/06/2026 at 13:14

1

Interesting facts

China transforms desert-devastated area into the world’s largest artificial forest, planting trees for 60 years, blocking sand that reached Beijing, and creating a “green lung” of 92,000 hectares in a region once considered lost.

Alisson Ficher 13/06/2026 at 15:46

0

Toyota launches “family hybrid van” with 7 or 8 seats, 1.8 hybrid engine, fuel consumption of up to 23.8 km/l, and a price equivalent to about R$ 104,000 without taxes, below the Tiggo 8 Pro Plug-in Hybrid sold in Brazil: meet the Noah Hybrid 2026 in Japan.

Carla Teles 13/06/2026 at 23:09

4

Desert sand, previously discarded for being too smooth for concrete, becomes an ecological brick in the United Arab Emirates, dispensing with Portland cement, curing at room temperature, and attempting to transform dunes useless for construction into raw material for a new arid engineering.

Valdemar Medeiros 15/06/2026 at 15:56

Desert sand, previously discarded for being too smooth for concrete, becomes an ecological brick in the United Arab Emirates, dispensing with Portland cement, curing at room temperature, and attempting to transform dunes useless for construction into raw material for a new arid engineering.
17/06/2026 by Merade

This is a welcome idea. I hope all the countries…
Mother of 7 children leaves night job in São Paulo, invests only R$ 86 in artisanal ice creams and sees income become household support: business created at the gate reaches R$ 6,000 per month and aims for a physical store.
17/06/2026 by Esther Tuase

Yes
Desert sand, previously discarded for being too smooth for concrete, becomes an ecological brick in the United Arab Emirates, dispensing with Portland cement, curing at room temperature, and attempting to transform dunes useless for construction into raw material for a new arid engineering.
17/06/2026 by Kabelo Motswagole

Kindly share the research paper
Taiwanese fishermen accepted offshore wind turbines in the name of clean energy, but now they say that old routes have disappeared, fish have decreased, and income has become uncertain on the coast.
17/06/2026 by John Hopkins

could it have something to do with a certain fishing…
India approved the country’s first submerged road-rail tunnel, 15.8 kilometers dug under the bed of the Brahmaputra River.
17/06/2026 by AKGK

Marine Drive to Worli undersea tunnel 2.7 km
Desert sand, previously discarded for being too smooth for concrete, becomes an ecological brick in the United Arab Emirates, dispensing with Portland cement, curing at room temperature, and attempting to transform dunes useless for construction into raw material for a new arid engineering.
16/06/2026 by K. Madduri

Good innovation.
Desert sand, previously discarded for being too smooth for concrete, becomes an ecological brick in the United Arab Emirates, dispensing with Portland cement, curing at room temperature, and attempting to transform dunes useless for construction into raw material for a new arid engineering.
16/06/2026 by Sualih Mohammed

Nice idea

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