Discover useful guides on calculators, math, finance, and beyond.
Each time we turn a key, we trigger a chain reaction in the atmosphere high above us. Exhaust pipes pump carbon dioxide, a gas that holds heat like an overly thick comforter. This is not theoretical science. It is the routine of driving to work or a family vacation, adding to the changes in climate that we already see occurring.
In a time of constant cyber threats, strong passwords are our best first line of defense in our digital lives. The only problem is that, when we create a password ourselves, it's often predictable or unnervingly simple for hackers to guess.
In 2025, the field of circuit design is evolving rapidly through innovation, from small AI-wearable solutions to flexible sensing capabilities for electric vehicles. The global electronics market reached $1.1 trillion in 2025, propelled by smart grids and energy-saving homes needing precise control of power.
Engineering curricula are changing rapidly, and in 2025, physics can serve as the foundation for future innovation in sustainable design and for modeling with AI assistance.
Right at the end of October 2025, folks across the U.S. pay an average of 17.47 cents per kWh for residential electricity, pulled fresh from EIA reports.
Mathematics is precise work, but often time becomes the enemy, making equations conceptual roadblocks. By 2025, there will be free online calculators that can perform these calculations on-demand, allowing us to put our focus on the important work of analysis.
The financial world undergoes changes in 2025 with inflation being steady at 2.4% but felt in wage and asset bases, the Federal Reserve is near 4.5%, and yields from savings over 5% as money flows to High Yield accounts, with stock returns expected to be 7-9%, with exception for some AI sectors.
By 2025, U.S. credit card debt has surpassed $1.13 trillion, due to lingering inflation resulting in average variable rates close to 23%.
According to WHO data, global obesity impacts more than 1.02 billion adults and calls for trustworthy measures like BMI to better understand its associated risks (like cardiovascular and metabolic related conditions).
In the home buying process, buyers in 2025 will contend with a market that is stabilizing interest rates and slowly increasing inventory levels. At the time of late October, the average 30-year fixed mortgage rate was 6.19%, a far cry from peak rates exceeding 7% in the early part of the year.