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Airbus, Rolls-Royce, Siemens developing a hybrid plane

FRANKFURT — Airbus, Siemens and Rolls-Royce are teaming up to develop a hybrid passenger plane that would use a single electric turbofan along with three conventional jet engines running on aviation fuel.

The plane is an effort to develop and demonstrate technology that in the future could help limit emissions of carbon dioxide from aviation and reduce reliance on fossil fuels.

Under pressure, social media giants acknowledge meddling

WASHINGTON — In three exhaustive hearings this week, executives from Facebook, Twitter and Google acknowledged that their platforms were used by Russia to try and create division over such disparate issues as immigration, gun control and politics. House investigators released a trove of Facebook and Twitter ads that showed just how extraordinary the cyber intrusion was.

Iridium to rely on used SpaceX boosters for next 2 launches

LOS ANGELES — Iridium Communications says its next two launches of new-generation satellites will use refurbished SpaceX Falcon 9 first-stage boosters that have flown previously.

The announcement Thursday is another step in SpaceX’s effort to reduce launch costs.

The company has launched a few used boosters and is trying to expand acceptance of reusability across the industry.