Sweden is so good at recycling, it has run out of garbage and must now import garbage from Norway to fuel its energy programmes (email received during May 2015).

Fuel cell vehicles: According to the World Economic Forum (WEF), fuel cell vehicles have many more advantages than electrical or conventional petrol or diesel vehicles. Fuel cells generate direct power from natural gas, different to batteries that must be charged from an external source. With fuel cell vehicles you won’t have a fear of distance like with battery-powered electrical vehicles, as it will produce 650km on a tank, and a hydrogen tank can be filled in three minutes (Francois Williams, Sake-Rapport, 8 March 2015).

About 17 000 trees are processed into toilet paper daily (Huisgenoot Nuus, 11 December 2014).

International Whiskey day was celebrated on 16 May 2015. The first recipe for making whiskey dates back to 1497. How do you know you’re drinking real Scotch? If the bottle’s label says Whisky, it is the real thing. All other producers must spell whiskey with an ‘e’, i.e. Whiskey (RSG, 15 May 2015).

The human brain can store about 100 terra bytes, or 93 000 giga bytes. This is equal to 100 000 movies.

New test for cocaine abuse: A new drug test will be able to detect cocaine abuse by means of finger prints, according to a report in The Independent. Cocaine excretes chemicals, somewhat like sweat, and this test is more effective than blood tests or body fluids, as those can be exchanged with fake samples. And, of course, your finger print will also disclose your identity (Rapport Nuus, 17 May 2015).

Payment for having a sweet tooth: According to a 2013 research report published by the Credit Suisse Research Institute, “Sugar: Consumption at a Cross-roads”, South Africans are 15th on the list of the most obese nations worldwide. The average South African consumes about 25 teaspoons of sugar daily, compared to the worldwide average sugar consumption of 17 teaspoons daily. According to the World Health Organisation (WHO), one should not consume more than the equivalent of ten teaspoons of sugar (40g) per day (4g of sugar is about one teaspoon). Sugar has all the criteria of potentially addictive substances (Rapport Beleef, 17 May 2015).