Two-stroke engine

A two-stroke, or two-cycle, engine is a type of internal combustion engine which completes a power cycle with two strokes (up and down movements) of the piston during only one crankshaft revolution. This is in contrast to a "four-stroke engine", which requires four strokes of the piston to complete a power cycle. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust (or scavenging) functions occurring at the same time.

Two-stroke engines often have a high power-to-weight ratio, usually in a narrow range of rotational speeds called the "power band". Compared to four-stroke engines, two-stroke engines have a greatly reduced number of moving parts, and so can be more compact and significantly lighter.

The first commercial two-stroke engine involving in-cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. However, unlike most later two-stroke engines, his had a separate charging cylinder. The crankcase-scavenged engine, employing the area below the piston as a charging pump, is generally credited to Englishman Joseph Day. The first truly practical two-stroke engine is attributed to Yorkshireman Alfred Angas Scott, who started producing twin-cylinder water-cooled motorcycles in 1908.

Kentucky Derby

The Kentucky Derby /ˈdɜːrbi/ is a horse race held annually in Louisville, Kentucky, United States, on the first Saturday in May, capping the two-week-long Kentucky Derby Festival. The race is a Grade I stakes race for three-year-old Thoroughbreds at a distance of one and a quarter miles (2 km) at Churchill Downs. Colts and geldings carry 126 pounds (57 kilograms) and fillies 121 pounds (55 kilograms).

The race is known in the United States as "The Most Exciting Two Minutes In Sports" or "The Fastest Two Minutes in Sports" for its approximate duration, and is also called "The Run for the Roses" for the blanket of roses draped over the winner. It is the first leg of the American Triple Crown and is followed by the Preakness Stakes, then the Belmont Stakes. Unlike the Preakness and Belmont Stakes, which took hiatuses in 1891–1893 and 1911–1912, respectively, the Kentucky Derby has been run every consecutive year since 1875. A horse must win all three races to win the Triple Crown. In the 2015 listing of the International Federation of Horseracing Authorities (IFHA), the Kentucky Derby tied with the Whitney Handicap as the top Grade 1 race in the United States outside of the Breeders' Cup races.

RB Leipzig

RasenBallsport Leipzig e.V., commonly known and deliberately promoted as RB Leipzig, is a German association football club based in Leipzig, Saxony. The club was founded in 2009 by initiative of energy drink-maker Red Bull GmbH who purchased the playing license of the fifth division side SSV Markranstädt with the intention of advancing the new club to the top-flight Bundesliga within eight years. Men's professional football is run by the spin-off organization RasenballSport Leipzig GmbH. RB Leipzig plays its home matches at the Red Bull Arena.

In its inaugural season in 2009–10, RB Leipzig dominated the NOFV-Oberliga Süd (V) and was promoted as champions to the Regionalliga Nord (IV). RB Leipzig won the 2012-13 Regionalliga Nordost season without conceding a single defeat and was promoted to the 3. Liga (III). RB Leipzig finished the 2013-14 3. Liga season as runner-up and was promoted to the 2. Bundesliga (II) as the first team since the introduction of the 3. Liga to win promotion after only one season.

Seth Rogen

Seth Aaron Rogen (/ˈroʊɡən/; born April 15, 1982) is a Canadian actor, filmmaker, and comedian.

Rogen began his career performing stand-up comedy during his teenage years, winning the Vancouver Amateur Comedy Contest in 1998. While still living in his native Vancouver, he landed a supporting role in the series Freaks and Geeks. Shortly after he moved to Portland, Oregon for his role, Freaks and Geeks was officially cancelled after one season due to low viewership. Rogen later got a part on the equally short-lived sitcom Undeclared, which also hired him as a staff writer.

After landing his job as a staff writer on the final season of Da Ali G Show, for which Rogen and the other writers received an Emmy Award nomination, Rogen was guided by Judd Apatow toward a film career. Rogen was cast in a major supporting role and credited as a co-producer in Apatow's directorial debut, The 40-Year-Old Virgin. After Rogen received critical praise for his performance, Universal Pictures agreed to cast him as the lead in Apatow's films Knocked Up and Funny People. Rogen co-starred as Steve Wozniak in Universal's Steve Jobs biopic in 2015.