Meet Vivien He, the 17-year-old California student who built a Rubik - cube-sized seismometer for under $100; since it switched on in September 2020, the device has caught every magnitude 3. 0 earthquake near Los Angeles with up to tens of...

Reported by 1 outlet.

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First detected yesterday at 10:02 PM ET

Last updated yesterday at 10:02 PM ET

Independent report1

Pulse Score

Earliest published (publisher's reported time): yesterday at 9:30 PM ET — this is the publisher's own timestamp and may precede when TodayInPulse first detected the story.

Coverage journey

How this story spread — and when TodayInPulse first saw it.

yesterday at 9:30 PM ET Estimated

Original reporting source

Publisher's reported/published time

yesterday at 10:02 PM ET Recorded

First detected by TodayInPulse

Earliest time TodayInPulse recorded a source for this story

yesterday at 10:02 PM ET Recorded

Current coverage

1 independent report

Coverage & momentum over time

Unverified

Independent reports vs outlets

Independent reports Outlets

Pulse Score & velocity

Pulse Score Velocity /hr

How this story developed

See what changed throughout the day.

1:30 AMDeveloping

Initial report.