A heat powered Stirling engine, made by Kontax.
A tube shaped paper plane. Glides well, great for lecture halls. Dog at no extra charge.
This is a fluoroscopy video (real time X-ray) of an 8 week old puppy. It has a Patent Ductus Arteriosus (PDA), a congenital heart condition that leads to constriction of the oesophagus. This means that the puppy can not swallow solid food properly. The condition can be cured with corrective surgery.