Things I learned lately 30 November

• A new study suggests that over-the-counter painkillers like Ibuprofen could prevent two debilitating side effects of marijuana use — learning problems and memory loss — that currently inhibit the drug's medical value.
• A McDonald's restaurant in Sydney Australia seem to have found a way to stop teens from loitering in the parking lot with friends. They play loud opera and classical music on the outdoor loudspeakers. The only issue is that at times, it seems to be bothering nearby residents too.
• The city of Vancouver is replacing all round doorknobs with door levers in public buildings to make it easier for the elderly, people with injuries or disabilities. They are also investigating things like wider doorways, lower light switches and higher power outlets.
• Employees at a Cleveland Walmart held a holiday food drive for other Walmart employees. Walmart made $17 billion in profit last year.
• The rate of Tesla (electric) cars that caught fire (due to a major accident) are 1 in 6333 cars. That compares to gasoline cars, where the ratio is 1 in 1350 cars. In the period 2012-2013, there were over 400 deaths and 1200 serious injuries in the US alone due to gasoline car fires. In the same period, there were 0 deaths and 0 injuries due to fires in Tesla cars anywhere in the world.
• [Update: DEBUNKED - It was a scam] A woman left no tip on a $93.55 bill for their gay, female server in New Jersey. The receipt shows no tip and a scrawled note saying "Sorry I cannot tip because I do not agree with your lifestyle & the way you live your life".
• Canada has a total oil refining capacity of 2,085,000 barrels per day. Louisiana has a capacity of 3,309,000 barrels per day. Texas has a capacity of 5,246,000 barrels per day.
• Hewlett-Packard owns a fleet of 7 Gulfstream V jets, which they use to fly their executives around. The annual cost to maintain this fleet is enough to hire 250 workers earning $100,000 per year.
• WalMart owns a fleet of 18 jets, including 16 Lear Jets. The purchase price alone on these is in excess of $72 million. The average WalMart sales associate earns $18,000 per year on a 34 hour week. 
• The RCMP searched the homes in High River Alberta for people and animals in distress during the floods in June. While in the homes, the RCMP seized weapons that were unsecured, in plain sight. Weapons in cabinets or locked away were not taken. In one home, 93 weapons were seized. The total number seized was 542.
• Netflix in Canada offers 3,717 movies and TV shows while the US version has 10,218.