Neodymium: Uses, Properties, Price and Where It Comes From
Neodymium is the rare earth that makes the strongest magnets possible. Here is what it is, what it is used for, where it comes from and what it costs.
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Solar Panel Payback Period: Calculator and 2026 Numbers
How many years until solar pays for itself? Here is how payback is calculated, what solar costs in 2026 now that the federal tax credit has ended, typical payback periods by state conditions, and a calculator for your own numbers.
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Bidirectional Charging Explained: V2H, V2G and What It Costs
Your EV’s battery is five to ten times bigger than a home battery. Here is how bidirectional charging lets it power your house, which cars and chargers support it in 2026, what it costs and whether it is worth it.
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Terbium: Uses, Properties, Price and Why Magnets Need It
Terbium is one of the rarest rare earths. A fraction of a percent keeps neodymium magnets working when they get hot. Here is what it is used for, where it comes from and why it costs so much more outside China.
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How Long Do EV Batteries Last? Lifespan, Degradation and Warranty
Most EV batteries lose about 2% of their capacity a year and outlast the car. Here is what real-world data from 22,700+ vehicles shows, what speeds up wear, what the warranty covers and what a replacement costs.
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Cerium Magnets: How Cerium and Lanthanum Replace Neodymium in NdFeB
A cerium magnet is a neodymium magnet in which part of the neodymium has been replaced with cerium, the cheapest and most plentiful rare earth. It is not a new magnet family so much as a cost-cutting recipe for the existing one, and it has quietly become one of the biggest product lines in China’s…
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Cerium: Uses, Cerium Oxide and Why It Is So Cheap
Cerium is the most abundant rare earth and the hardest to sell. Here is what it is used for, how cerium oxide polishes glass, and why every new magnet mine makes a cerium surplus.
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How Long Do Solar Panels Last? Lifespan and Degradation Explained
Solar panels do not stop working when the warranty ends. Here is how fast they really lose output, what warranties promise, and which part of the system fails first.
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Praseodymium: Uses, Properties and Why Magnets Need It
Praseodymium is the “green twin” of neodymium and makes up about a quarter of the rare earths in most strong magnets. Here is what it does, where it comes from, and who produces it.
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Cost to Charge an Electric Car: Calculator and 2026 Prices
Charging an electric car at home costs about 5.5 cents per mile at the average US electricity price. Use the calculator to work out your own monthly cost and compare it with gas.
