Climate change

Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years). Climate change may refer to a change in average weather conditions, or in the time variation of weather around longer-term average conditions (i.e., more or fewer extreme weather events). Climate change is caused by factors such as biotic processes, variations in solar radiation received by Earth, plate tectonics, and volcanic eruptions. Certain human activities have also been identified as significant causes of recent climate change, often referred to as "global warming".

Scientists actively work to understand past and future climate by using observations and theoretical models. A climate record—extending deep into the Earth's past—has been assembled, and continues to be built up, based on geological evidence from borehole temperature profiles, cores removed from deep accumulations of ice, floral and faunal records, glacial and periglacial processes, stable-isotope and other analyses of sediment layers, and records of past sea levels. More recent data are provided by the instrumental record. General circulation models, based on the physical sciences, are often used in theoretical approaches to match past climate data, make future projections, and link causes and effects in climate change.

Bill Nye

William Sanford "Bill" Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television presenter, actor, writer, scientist, and former mechanical engineer, best known as the host of the Disney/PBS children's science show Bill Nye the Science Guy (1993–1998) and for his many subsequent appearances in popular media as a science educator.

Early life and education

Nye was born on November 27, 1955, in Washington, D.C., to Jacqueline (née Jenkins; 1921–2000), a codebreaker during World War II, and Edwin Darby "Ned" Nye (1917–1997), also a World War II veteran, whose experience without electricity in a Japanese prisoner-of-war camp led him to become a sundial enthusiast. His maternal grandmother was French, from Dancevoir.

After attending Lafayette Elementary and Alice Deal Junior High in the city, he was accepted to the private Sidwell Friends School on a partial scholarship and graduated in 1973. He studied mechanical engineering at Cornell University (where he took an astronomy class taught by Carl Sagan) and graduated with a B.S. in mechanical engineering in 1977. Nye occasionally returns to Cornell as a guest-lecturer of introductory-level astronomy and human ecology classes.

Leonardo DiCaprio

Leonardo Wilhelm DiCaprio (/dᵻˈkæpri.oʊ/; born November 11, 1974) is an American actor and film producer. He has been nominated for numerous awards, and has won three Golden Globe Awards. DiCaprio began his career by appearing in television commercials, after which he had recurring roles in TV series such as the soap opera Santa Barbara and the sitcom Growing Pains in the early 1990s. He began his film career by starring as Josh in Critters 3 before starring in the film adaptation of the memoir This Boy's Life (1993) alongside Robert De Niro. DiCaprio was praised for his supporting role in the drama What's Eating Gilbert Grape (1993), and gained public recognition with leading roles in the drama The Basketball Diaries (1995) and the romantic drama Romeo + Juliet (1996), before achieving international fame with James Cameron's epic romance Titanic (1997), which became the highest-grossing film to that point.

Since the 2000s, DiCaprio has received critical acclaim for his work in a wide range of film genres. His subsequent films include The Man in the Iron Mask (1998), the biographical crime drama Catch Me If You Can (2002) and the epic historical drama Gangs of New York (2002) which also marked his first of many collaborations with director Martin Scorsese. DiCaprio was also acclaimed for his performances in the political war thriller Blood Diamond (2006), the neo-noir crime drama The Departed (2006), the espionage thriller Body of Lies (2008), the drama Revolutionary Road (2008), the psychological thriller Shutter Island (2010), the science fiction thriller Inception (2010), the biographical film J. Edgar (2011), the western Django Unchained (2012), and the period drama The Great Gatsby (2013).

Al Gore

Albert Arnold "Al" Gore, Jr. (born March 31, 1948) is an American politician and environmentalist who served as the 45th Vice President of the United States from 1993 to 2001 under President Bill Clinton. Chosen as Clinton's running mate in their successful 1992 campaign, he was reelected in 1996. At the end of Clinton's second term, Gore was the Democratic Party's nominee for President in 2000. After leaving office, Gore remained prominent as an author and environmental activist, whose work in climate change activism earned him the Nobel Peace Prize in 2007.

Gore was an elected official for 24 years. He was a Congressman from Tennessee (1977–85) and from 1985 to 1993 served as one of the state's Senators. He served as Vice President during the Clinton administration from 1993 to 2001. In the 2000 presidential election, in what was one of the closest presidential races in history, Gore won the popular vote but lost in the Electoral College to Republican George W. Bush. A controversial election dispute over a vote recount in Florida was settled by the U.S. Supreme Court, which ruled 5–4 in favor of Bush.