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  2. 30 by 30 - Wikipedia

    en.wikipedia.org/wiki/30_by_30

    30 by 30 (or 30x30) is a worldwide initiative for governments to designate 30% of Earth's land and ocean area as protected areas by 2030. [1] [2] The target was proposed by a 2019 article in Science Advances , "A Global Deal for Nature: Guiding principles, milestones, and targets", highlighting the need for expanded nature conservation efforts ...

  3. Black players in professional American football - Wikipedia

    en.wikipedia.org/wiki/Black_players_in...

    Of the 32 starting kickers in the NFL in 2013, only one was black. In 2013, there were two African American punters, Reggie Hodges for the Cleveland Browns and Marquette King for the Denver Broncos. [1] In October 2018, George Taliaferro, the first African American selected by the process of the NFL draft, died at the age of 91.

  4. Angle of incidence (optics) - Wikipedia

    en.wikipedia.org/wiki/Angle_of_incidence_(optics)

    The angle of incidence, in geometric optics, is the angle between a ray incident on a surface and the line perpendicular (at 90 degree angle) to the surface at the point of incidence, called the normal. The ray can be formed by any waves, such as optical, acoustic, microwave, and X-ray. In the figure below, the line representing a ray makes an ...

  5. October 2022 Conservative Party leadership election - Wikipedia

    en.wikipedia.org/wiki/October_2022_Conservative...

    Liz Truss announcing her resignation on 20 October 2022. Eleven candidates put themselves forward for the July leadership election, with eight receiving sufficient nominations from Conservative MPs: Kemi Badenoch, Suella Braverman, Jeremy Hunt, Penny Mordaunt, Rishi Sunak, Liz Truss, Tom Tugendhat, and Nadhim Zahawi. [17]

  6. Gamma ray - Wikipedia

    en.wikipedia.org/wiki/Gamma_ray

    A gamma ray, also known as gamma radiation (symbol. γ. ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves, typically shorter than those of X-rays. With frequencies above 30 exahertz ( 3 × 1019 Hz) and wavelengths less than 10 ...

  7. Ten percent of the brain myth - Wikipedia

    en.wikipedia.org/wiki/Ten_percent_of_the_brain_myth

    The 10% of the brain myth states that humans generally use only one-tenth (or some other small fraction) of their brains. It has been misattributed to many famous scientists and historical figures, notably Albert Einstein. [1] By extrapolation, it is suggested that a person may 'harness' or 'unlock' this unused potential and increase their ...