Although recent vaccine approvals have raised hopes of a turnaround in the pandemic later this year, renewed waves and new variants of the virus pose concerns for the outlook. Amid exceptional ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Melanie Pinola and Arriana Vasquez Even if you’re not a secret agent and you ...

Magnitude scales can be used to describe earthquakes so small that they are expressed in negative numbers. The scale also has no upper limit. Learn more about how we measure earthquake magnitude.

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