Space environment health score shows how healthy - or stressed - Earth’s orbit is expected to become over the next 200 years.

It's always important to protect yourself from UV radiation to avoid getting burned and damaging your skin. One way to plan for your safety outside is by checking the UV index. (Photo Credit: E+/Getty ...

A way to standardize the price changes of goods that have much different prices. For example, a consumer price index might be represented by a shopping cart of goods. Suppose those goods cost $324.

Index funds are passive investments. They track an index with the aim of replicating that index’s performance minus expenses. Active funds, meanwhile, are led by managers who choose particular ...

The Dollar Index is a long-running measure of the value of the U.S. Dollar against a variety of other fiat currencies. Investors can trade ETFs based off the index's movements, along with using it as ...

A type of mutual fund or exchange-traded fund, index funds track the performance of a specific market index. These funds are typically low-cost, tax-efficient and easy to use, making them attractive ...