Mercedes' team members practice a pit stop with the car of Italian driver Andrea Kimi Antonelli ahead of the Formula One Chinese Grand Prix at the Shanghai International Circuit in Shanghai on March 20, 2025. (Photo by Héctor Retamal/AFP Photo)

Alpine driver Pierre Gasly of France slides off the track during a qualifying session at the Formula One Las Vegas Grand Prix auto race, Friday, November 21, 2025 in Las Vegas. (Photo by Nick Didlick/AP Photo)

Reuters photographer Bobby Yip took a series of portraits of people taking part in the “Occupy Central” protests in Hong Kong, and asked them why they had joined the demonstrations. China rules Hong Kong under a “one country, two systems” formula that accords the territory limited democracy. Tens of thousands of mostly student protesters are demanding Beijing give them full democracy, with the freedom to nominate election candidates. The unrest is the worst in Hong Kong since China resumed its rule over the former British colony in 1997. (Photo by Carlos Barria/Reuters)

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.

In this Tuesday, August 27, 2019, file photo, a climber stops to take pictures of clouds while climbing towards the summit of Mount Fuji to watch the sunrise, in Japan. (Photo by Jae C. Hong/AP Photo/File)

Philippine actor Soliman Cruz wearing a business suit stands inside an 8-foot transparent bubble while other activists wearing masks touch the bubble during an anti-pollution protest near a park in Manila on April 25, 2025. The protest is part of a climate advocates 350 campaign on Manila's air pollution crisis, due to traffic emissions, fossil fuel and unchecked industrial activity. (Photo by Ted Aljibe/AFP Photo)