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  2. Half-Life (series) - Wikipedia

    en.wikipedia.org/wiki/Half-Life_(series)

    In December 2008, Valve announced that the two main Half-Life games had sold 15.8 million units in retail (9.3m for the first, 6.5m for the second), while the Half-Life expansions [85] had sold 1.9 million (Opposing Force: 1.1 million, Blue Shift: 800,000) and Half-Life 2 expansions 1.4 million units (all for Episode One) by the end of November ...

  3. Half-Life 2: Episode One - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2:_Episode_One

    Half-Life 2: Episode One is a 2006 first-person shooter game developed and published by Valve for Windows. It continues the story of Half-Life 2 (2004). As the scientist Gordon Freeman, players must escape City 17 with Gordon's companion Alyx Vance. Like previous Half-Life games, Episode One combines shooting, puzzles and storytelling.

  4. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.

  5. Half-Life (video game) - Wikipedia

    en.wikipedia.org/wiki/Half-Life_(video_game)

    Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most first-person shooters at the time, which relied on cut-scene intermissions to detail their plotlines, Half-Life ' s story is told mostly using scripted sequences (bar one short cutscene), keeping the player in control of the first-person viewpoint.

  6. NYT ‘Connections’ Hints and Answers Today, Saturday, December 14

    www.aol.com/nyt-connections-hints-answers-today...

    Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT 'Connections’ hints and answers for #552 on Saturday ...

  7. Half-life - Wikipedia

    en.wikipedia.org/wiki/Half-life

    Instead, the half-life is defined in terms of probability: "Half-life is the time required for exactly half of the entities to decay on average". In other words, the probability of a radioactive atom decaying within its half-life is 50%. [2] For example, the accompanying image is a simulation of many identical atoms undergoing radioactive decay.

  8. 1,200 readers told us what they regret about investing for ...

    www.aol.com/1-200-baby-boomers-told-091001825.html

    Gary Lee Hayes, 70, wished he'd been more regimented with his savings and investments.The California resident briefly served in the Navy, got a degree in public administration, and worked in ...

  9. Half-Life 2 - Wikipedia

    en.wikipedia.org/wiki/Half-Life_2

    On May 26, 2010, Half-Life 2, Episode One and Episode Two were released for Mac OS X. [27] In 2013, Valve ported Half-Life 2 to Linux [28] and released a free update adding support for the Oculus Rift virtual reality headset. [29] An NVIDIA Shield Tablet-exclusive port for Android was released on May 12, 2014. [30]