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This “pi plate” shows some of the progress toward finding all the digits of pi. Piledhigheranddeeper

The search for the value of pi

On the occasion of Pi Day, a look at the history of calculating the actual, and increasingly exact, value of pi (π).
Our modern crops need some help in the immunity department. Andy / Andrew Fogg

Can we ‘vaccinate’ plants to boost their immunity?

Modern agriculture is synonymous with monoculture. That lack of diversity is bad news for plants’ natural immune defenses. Researchers are figuring out how to help plants fend off microbes – without pesticides.
Why do special educators leave teaching? US Department of Education Follow

What do special educators need to succeed?

A shortage of special education teachers is threatening states’ abilities to provide high quality education for students with disabilities. Changing teachers’ working conditions can help.
A molecular beam epitaxy machine used to create semiconductor samples. John C. Bean (University of Virginia) and Tom Vandervelde (Tufts University)

Beyond silicon: the search for new semiconductors

As we reach the limits of what can be done with silicon, the search for new and improved superconductors is on.
Researchers compared the shipwreck history to tree ring data from slash pines to piece together the hurricane history over past centuries. Grant Harley

Shipwreck records and tree rings unveil Caribbean hurricane history – and clues to the future

In an attempt to better understand hurricanes, researchers recreate hundreds of years of hurricane records with Spanish shipwreck logs and tree ring data.
Hillary Clinton with Cecile Richards, President of Planned Parenthood Federation of America. Scott Morgan/Reuters

Where do the 2016 candidates stand on contraception?

Democratic candidates support access to contraception, while candidates from the Republican Party favor policies that could severely restrict access to contraception.