Steve Caplin discusses the US returning to the Moon for the first time since 1972, entirely in private hands rather than equipped by NASA. There's an electric rickshaw with a detachable scooter. A top-of-the-ranger mobility scooter has all mod cons. Brian Eno's limited edition turnable is a work of art – but an ugly one. Steve wonders why there's a new portable CD player. Charles Darwin's library is online in its entirety, but dreadfully presented. Lithium batteries could be made far safer, if people are prepared to pay. Taylor Swift's songs could save people from heart attacks. Repeated vaccines should be given in alternate arms. An underwater kite could be the solution to strong wave power. And chocolate could have much less sugar – and more oat flour.

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