Roberto Mazzarella has been on the run for more than a year and was living under a false name, police say.
A former US marine tells the BBC the priority of any recovery team would be to look for signs of life.
NASUWT's leader said there is a "ticking time bomb" if male pupils cannot be helped with misogyny.
How we travel to work in cities might be changing as e-scooter and e-bike fares become cheaper than traditional public transport.
The snap was taken aboard the Orion capsule by its commander, Reid Wiseman, as the crew head towards the Moon.