Top news for 2021-07-31

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On This Day In Space: May 25, 2008: NASA's Phoenix spacecraft lands on Mars

Biden Seeks to Revive Vaccine Effort With New Rules and Incentives

Vaccinated People May Spread the Virus, Though Rarely, C.D.C. Reports

Texas Gov. Abbott Exec Order: No Face Mask Mandates, Covid-19 Vaccine Requirements By Local Authorities

Here's What Ancient Climate Tipping Points May Be Able to Reveal About Earth's Future

For India’s Pharma Tycoons, Covid-19 Vaccines Are The New Cash Cows

Covid vaccine booster shots for the delta variant are being over-hyped by drug companies

Bendy camera the width of a human hair can take accurate 3D images

In South Africa, Poachers Now Traffic in Tiny Succulent Plants

A Plant That ‘Cannot Die’ Reveals Its Genetic Secrets