Did Scientists Really Make Metallic Hydrogen?

What is a key characteristic of Saccorhytus coronarius, considered one of the earliest ancestors of vertebrates?

• It was a large, fearsome predator.

• It had a bag-like body and a crown-like mouth.

• It had a complex internal skeleton.

• It was a plant-like organism.

How do deuterostomes, like humans and sea stars, develop their digestive system compared to protostomes?

• Deuterostomes develop an anus first, then a mouth.

• Deuterostomes develop a mouth first, then an anus.

• Protostomes develop an anus first, then a mouth.

• Both develop a mouth and anus at the same time.

What is a potential benefit of creating metallic hydrogen?

• It could be used to create new types of plastics.

• It could make electricity transfer more efficient at room temperature.

• It would be a new type of insulation material.

• It could help in developing faster computers by slowing down electrons.

Why are some scientists skeptical about the Harvard team's claim of creating metallic hydrogen?

• The team used too much hydrogen gas in their experiment.

• The diamonds used to create pressure might have broken.

• The shiny material observed might have been metallic aluminum oxide, not hydrogen.

• They did not publish their results in a scientific journal.