内容摘要：For example, humans process three wavelengths corresponding to red, blue and green light, while the mantis shrimp, a tiny crustacean, can visually perceive 12 channels of colour instead of three. An article by the Australian Academy of Science explains that the mantis shrimp can also detect ultraviolet and polarised light, which humans cannot see.

For example, humans process three wavelengths corresponding to red, blue and green light, while the mantis shrimp, a tiny crustacean, can visually perceive 12 channels of colour instead of three. An article by the Australian Academy of Science explains that the mantis shrimp can also detect ultraviolet and polarised light, which humans cannot see.

Will China ease restrictions on rare earth minerals exports?US officials had expected the Geneva talks to result in China easing its export restrictions on

. So far, there have been few signs of that, however.Rare earth minerals are a group of precious minerals required to manufacture a wide range of goods in the defence, healthcare and technology sectors.Rare earth metals, which include scandium and yttrium, are also key for producing components in capacitors – electrical parts which help power AI servers and smartphones.

China processes some 90 percent of the world’s rare earth minerals and instituted export controls in April to counter Trump’s “” tariffs in April, triggering alarm among US companies.

Last week, for instance, Ford temporarily closed a factory in Chicago which makes utility vehicles after one of its suppliers ran out of a specialised rare earth magnet.

In most new cars, especially elevate vehicles (cars with robotic technology allowing them to “climb” over obstacles), these high-tech magnets are used in parts which operate brake and steering systems, and power seats and fuel injectors.Doolan repeatedly told Al Jazeera’s undercover reporters that he and Angel would be able to arrange a meeting with President Mnangagwa.

During the meetings, Doolan said money laundering would not be a challenge “as long as you grease the wheels.” The scheme Angel and Doolan suggested involved our reporters — who they believed to be Chinese criminals — sending over a billion dollars of illicit cash to Zimbabwe through Angel. Some of that would be used to purchase Zimbabwean gold, which Doolan said could then be transported to Dubai and sold for legitimate money. “It’s a good washing machine, right?” he said.Told that our reporters had loads of unexplained cash, he said: “Good, I like embarrassing cash.”

Doolan did not respond to Al Jazeera’s request for a formal comment about the investigation.She is the president of Zimbabwe’s mining association and a niece of President Mnangagwa. Rushwaya is the person whom Angel and Doolan get in touch with when they want to discuss buying gold for their laundering scam.