Giant jet engines aim to make our flying greener

How much more efficiency can be wrung out of the jet engine - technology which is over 70 years old?

from BBC News - Technology https://ift.tt/2uWL4Ml
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The Dutch love four-day working weeks, but are they sustainable?

The Netherlands has the lowest working hours in Europe, but some say it is harming its economy. from BBC News https://ift.tt/msAjHvb