Pippy Park is an urban park located in the east end of the city; with over 3,400 acres (14 km2) of land, it is one of Canada's largest urban parks. The park contains a range of recreational facilities including two golf courses, Newfoundland and Labrador's largest serviced campground, walking and skiing trails as well as protected habitat for many plants and animals. Pippy Park is also home to the Fluvarium, an environmental education centre which offers a cross section view of Nagle's Hill Brook.
About how many acres is Pippy Park?
3,400

Executive vice governor Wei Hong confirmed on November 21, 2008 that more than 90,000 people in total were dead or missing in the earthquake. He stated that 200,000 homes had been rebuilt, and 685,000 were under reconstruction, but 1.94 million households were still without permanent shelter. 1,300 schools had been reconstructed, with initial relocation of 25 townships, including Beichuan and Wenchuan, two of the most devastated areas. The government spent $441 billion on relief and reconstruction efforts.
How many schools were reconstructed?
1,300

In infrared photography, infrared filters are used to capture the near-infrared spectrum. Digital cameras often use infrared blockers. Cheaper digital cameras and camera phones have less effective filters and can "see" intense near-infrared, appearing as a bright purple-white color. This is especially pronounced when taking pictures of subjects near IR-bright areas (such as near a lamp), where the resulting infrared interference can wash out the image. There is also a technique called 'T-ray' imaging, which is imaging using far-infrared or terahertz radiation. Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques. Recently T-ray imaging has been of considerable interest due to a number of new developments such as terahertz time-domain spectroscopy.
What is another name for terahertz radiation?
far-infrared