Improving Battery Capacity

A new printing technology is in development that promises to pack between 10 and 30 percent more energy into batteries for electric vehicles helping them to compete with conventional cars.

There is more at stake in battery development than longer-lasting AAs. In order for electric vehicles to compete with conventional models, car batteries must be cheaper, i.e. more efficient: "If the batteries could store more energy, automakers could use fewer of them, thus saving money. In conventional lithium-ion-battery manufacturing, electrode materials are applied in the form of slurry to metal foils. The thickness of the electrode is limited by the rate at which lithium ions can diffuse out of the material to reach an electrolyte."

5 facts you should know about the world’s refugees

Many governments do not report, or misreport, the numbers of refugees who enter their country.

David McNew/Getty Images
Politics & Current Affairs

Conflict, violence, persecution and human rights violations led to a record high of 70.8 million people being displaced by the end of 2018.

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Are these 100 people killing the planet?

Controversial map names CEOs of 100 companies producing 71 percent of the world's greenhouse gas emissions.

Image: Jordan Engel, reused via Decolonial Media License 0.1
Strange Maps
  • Just 100 companies produce 71 percent of the world's greenhouse gases.
  • This map lists their names and locations, and their CEOs.
  • The climate crisis may be too complex for these 100 people to solve, but naming and shaming them is a good start.
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Bernie Sanders' student debt plan bails out the rich

Bernie Sanders reveals an even bigger plan than Elizabeth Warren, but does it go too far?

SAUL LOEB/AFP/Getty Images
Politics & Current Affairs
  • Bernie Sanders has released a plan to forgive all the student debt in the country.
  • It is even larger than the plan Elizabeth Warren put forward two months ago.
  • The plan has drawn criticism for forgiving the debt of both the poor and those well off enough to pay their own debt.
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