Intermediate Word:  orrery  (a) clockwork model of the solar system  (b) museum display case  (c) bevel-gear mechanism in water-powered grist mill  (d) turnstile
Difficult Word: - purlieu  (a) Napoleonic French soldier  (b) bandolier  (c) crocheting stitch  (d) outskirts

Detail of 3D model of Francesca's Flagellation of Christ, Antonio Criminisi 3D Mars recreated from photos  - BBC  Researchers are creating 3D images of the Martian surface using photographs taken by Nasa's robot rovers. Using techniques originally applied to paintings, the researchers have written software that works out what flat images would look like from different viewpoints. The result is a navigable 3D model created from one or more pictures snapped by the Mars buggies. The first fruits of the research are short video sequences that give 3D views of Mars without the need for special spectacles. Mr Criminisi said it took about five minutes to generate the model from an image.
Asteroid, Andrejov Observatory Earth almost put on impact alert  - BBC  Left:  No one was quite sure at the beginning where 2004 AS1 was headed.  Astronomers have revealed how they came within minutes of alerting the world to a potential asteroid strike last month. Some scientists believed on 13 January that a 30m object, later designated 2004 AS1, had a one-in-four chance of hitting the planet within 36 hours. It could have caused local devastation and the researchers contemplated a call to President Bush before new data finally showed there was no danger. The procedures for raising the alarm in such circumstances are now being revised.

Lung x-ray

Vaccine 'could block lung cancer'  - BBC Left:  Non-small cell lung cancer is hard to treat successfully.  Experts have developed a vaccine which could be used to block the progress of lung cancer. A small study has suggested it could delay the recurrence of tumours in patients with the most common form of cancer. Non-small cell lung cancer accounts for three quarters of cases of the disease in the UK. A small number of patients were still free of cancer three years after they were vaccinated. In others, the vaccine appeared to delay the recurrence of cancer for several months. In others, the vaccine appeared to delay the recurrence of cancer for several months.

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