Learners Live

Apple Just Gave This Rare-Earth Company $500m

 It’s been a long time since an expensive magnet has been able to sport a “Made in America” sticker, but recent massive investments in one private company could change all that. Apple announced yesterday that it would commit to a $500 million deal with the only US-based rare-earth producer, MP Materials.  The company was founded in 2017 to bring production back to Mountain Pass Rare Earth Mine in Southeast California, about 50 miles south of Las Vegas, Nevada, which is the second largest rare-earth mine in the world—and the only one operational in the US.  MP Materials’ stock has skyrocketed almost 500% since going public in 2020. Morning Brew crew@morningbrew.com

Wyoming’s First New Coal Mine in Decades to Extract Rare Earths

The developer of what would be the first new coal mine in Wyoming in decades is launching a potentially half-billion-dollar effort to extract rare earth metals from the fossil fuel that is crucial for tech products and military hardware. The only operating U.S. rare earths mine is at Mountain Pass in California. Nearly all of the nation’s supply comes from China, the source of nearly 90% of the world’s supply. Wyoming’s First New Coal Mine in Decades to Extract Rare Earths – electrifiED

The Statue of Liberty was made with copper but due to oxidation, it turned green.

When the “Lady in the Harbor” first arrived in New York in 1886, she didn’t look like the mint-green icon we know today. In fact, for the first twenty years of her life, she stood as a towering, metallic beacon of reddish-gold. Designed by French sculptor Frédéric Auguste Bartholdi and engineered by Alexandre Gustave Eiffel, the statue was a gift from France to America. To build her, Bartholdi chose copper for three practical reasons:

  • Malleability:It could be hammered into elaborate, thin sheets.
  • Weight:Copper is lighter than stone or bronze, making it easier to ship 350 individual pieces across the Atlantic.
  • Durability:It was strong enough to survive a 27-day ocean voyage and the harsh winds of the harbor.

When she was unveiled on October 28, 1886, her skin—made of 300 copper sheets roughly the thickness of two pennies—shone with a bright, metallic brown luster. The transformation from “penny-colored” to “patina-green” wasn’t planned. Bartholdi actually expected the statue to age into a deeper, darker red. However, the unique environment of New York Harbor—a mix of salt air, moisture, and industrial pollution—triggered a process called oxidation.

The Timeline of Change:

  1. 1886–1900:The bright copper dulled into a dark, muddy brown.
  2. 1903:The first hints of a light green crust, or “patina,” began to appear.
  3. 1906:The color change was so controversial that Congress nearly stepped in. They appropriated $62,000 to paint the statue back to its original color, but the public protested, calling the idea “sacrilege.”
  4. 1910–1920:The statue was a patchy mix of brown and green until 1920, when the oxidation was complete, leaving her entirely teal.

While we now view the green color as iconic, it actually serves a vital structural purpose. The layer of verdigris (the green patina) acts as a protective shield. It seals the copper underneath, preventing the metal from further corrosion and weathering.  By the time the color fully changed, a new generation of immigrants had arrived in America seeing a green statue.