These days almost everyone has either flown a drone or listened to the nasty whining sound they produce. Although small drones (up to 20 kg) are about 40 decibels quieter than conventional civil ...

Antonio J Torija Martinez does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

The cocky demeanor of a used-car salesperson is likely not the look you’re going for. But most professionals do want to convey confidence when they communicate—whether in emails, in virtual settings, ...