The Beginning of The End of Cash

Cash’s role is waning, as mobile, encryption, and other technologies let us plug directly into the digital economy

5 min read
Image of Euro bill breaking apart.
Photo: Levi Brown; Prop Stylist: Ariana Salvato

graphic link to future of money landing page

The basic paradigm has been in effect for years. You toil, scheme, cajole, and cogitate, and in exchange you get paid—but probably not in cash. Some bits get altered periodically in a database somewhere, as infinitesimal patches of ferro­magnetism on disks or electromagnetic pulses flitting from here to there. Your earnings, your savings, your spending: Virtually all of it is virtual. 


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Who Will Fix Hubble and Chandra?

Private enterprise seeks to service storied space-science missions

4 min read
Who Will Fix Hubble and Chandra?

Elon Musk, step aside. You may be the richest rich man in the space business, but you’re not first. Musk’s SpaceX corporation is a powerful force, with its weekly launches and visions of colonizing Mars. But if you want a broader view of how wealthy entrepreneurs have shaped space exploration, you might want to look at George Ellery Hale, James Lick, William McDonald or—remember this name—John D. Hooker.

All this comes up now because SpaceX, joining forces with the billionaire Jared Isaacman, has made what sounds at first like a novel proposal to NASA: It would like to see if one of the company’s Dragon spacecraft can be sent to service the fabled, invaluable (and aging) Hubble Space Telescope, last repaired in 2009.

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Fast-Charging EV Batteries With Nickel Foil

New tech enables standard EV batteries to charge to 70 percent capacity in 11 minutes

3 min read
A grey box labeled EC Power with a minus and plus sticker on the side and equipment on top.

This 10-minute fast-charging battery was developed for electric cars, with the black box on the top containing a battery-management system to control the module.

EC Power

Standard electric-vehicle batteries can recharge much of their range in just 10 minutes with the addition of a thin sheet of nickel inside them, a new study finds. This could provide a welcome and economically attractive alternative to expensive EVs that carry massive and massively expensive battery packs.

If faster-charging options were available, enabling the EV’s sticker price to drop substantially, some researchers suspect consumers’ EV phobia and industry dogma against “range anxiety“ could be overcome.

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Get the Coursera Campus Skills Report 2022

Download the report to learn which job skills students need to build high-growth careers

1 min read

Get comprehensive insights into higher education skill trends based on data from 3.8M registered learners on Coursera, and learn clear steps you can take to ensure your institution's engineering curriculum is aligned with the needs of the current and future job market. Download the report now!