As such, low-flying aircraft could damage the wooden structure just by flying over it. To protect the historical site, it was designated a "no-fly zone" in 1970.

Although fewer companies fly the skyward tow ads, those who do claim business is booming and data backs them up.

Although fewer companies fly the skyward tow ads, those who do claim business is booming and data backs them up.

26 June 2025 NIH-funded science must now be free to read instantly: what you should know US biomedical agency’s public-access policy kicks in on 1 July. Nature talks to specialists about how to ...