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2. Speed of light - Wikipedia

   en.wikipedia.org/wiki/Speed_of_Light

   The limit obtained depends on the model used: if the massive photon is described by Proca theory, [60] the experimental upper bound for its mass is about 10 −57 grams; [61] if photon mass is generated by a Higgs mechanism, the experimental upper limit is less sharp, m ≤ 10 −14 eV/c 2 (roughly 2 × 10 −47 g).

3. Smallpox - Wikipedia

   en.wikipedia.org/wiki/Smallpox

   Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, [10] making smallpox the only human disease to have been eradicated to date.

4. Deepwater Horizon oil spill - Wikipedia

   en.wikipedia.org/wiki/Deepwater_Horizon_oil_spill

   Location: Macondo Prospect (Mississippi Canyon Block 252), in the North-central Gulf of Mexico, United States (south of Louisiana): Coordinates: 1]: Date: 20 April – 19 September 2010 (4 months, 4 weeks and 2 days): Cause; Cause: Wellhead blowout: Casualties: 11 people killed 17 people injured: Operator: Transocean under contract for BP [2]: Spill characteristics; Volume: 4.9 MMbbl ...

5. Orders of magnitude (energy) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(energy)

   List of orders of magnitude for energy; Factor (joules) SI prefix Value Item 10 −34: 6.626 × 10 −34 J: Energy of a photon with a frequency of 1 hertz. [1]8 × 10 −34 J: Average kinetic energy of translational motion of a molecule at the lowest temperature reached (38 picokelvin [2] as of 2021)

6. Justin Trudeau - Wikipedia

   en.wikipedia.org/wiki/Justin_Trudeau

   Justin Pierre James Trudeau PC MP (/ ˈ t r uː d oʊ, t r uː ˈ d oʊ / ⓘ TROO-doh, troo-DOH, French: [ʒystɛ̃ pjɛʁ dʒɛms tʁydo]; born December 25, 1971) is a Canadian politician who has been serving as the 23rd prime minister of Canada since 2015 and the leader of the Liberal Party since 2013.

7. Elon Musk - Wikipedia

   en.wikipedia.org/wiki/Elon_Musk

   Elon Reeve Musk was born on June 28, 1971, in Pretoria, South Africa's administrative capital. [7] [8] He is of British and Pennsylvania Dutch ancestry.[9] [10] His mother, Maye (née Haldeman), is a model and dietitian born in Saskatchewan, Canada, and raised in South Africa.