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2. Testosterone - Wikipedia

   en.wikipedia.org/wiki/Testosterone

   Testosterone is the primary male sex hormone and androgen in males. [3] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

3. 10%: What Makes a Hero? - Wikipedia

   en.wikipedia.org/wiki/10%:_What_Makes_a_Hero?

   10%: What Makes a Hero? (Hebrew: 10% – מה הופך אדם לגיבור?, 10% – Mah Hofech Adam Lagibor?) is a 2013 Israeli documentary film directed by Yoav Shamir. The film focuses on the concept of heroism, which the director sets out to define and locate.

4. Africa - Wikipedia

   en.wikipedia.org/wiki/Africa

   Africa's population is the youngest among all the continents; [10] [11] the median age in 2012 was 19.7, when the worldwide median age was 30.4. [12] Despite a wide range of natural resources , Africa is the least wealthy continent per capita and second-least wealthy by total wealth, ahead of Oceania .

5. Betelgeuse - Wikipedia

   en.wikipedia.org/wiki/Betelgeuse

   A typical type II-P supernova emits 2 × 10 46 J of neutrinos and produces an explosion with a kinetic energy of 2 × 10 44 J. As seen from Earth, Betelgeuse as a type IIP supernova would have a peak apparent magnitude somewhere in the range −8 to −12. [ 180 ]

6. Factor 10 - Wikipedia

   en.wikipedia.org/wiki/Factor_10

   Friedrich Schmidt-Bleek, from the Wuppertal Institute for Climate, Environment and Energy, first proposed the Factor 10 and dematerialization concepts in the early 1990s. . He concluded in his studies that 80% of the world's resources are distributed among First World nations, which contribute 20% of the global population, so those nations are promoting an unsustainable system of developme

7. Heathrow Airport - Wikipedia

   en.wikipedia.org/wiki/Heathrow_Airport

   Heathrow Airport (/ ˌ h iː θ ˈ r oʊ, ˈ h iː θ r oʊ /), [6] called London Airport until 1966 (IATA: LHR, ICAO: EGLL), [7] and now known as London Heathrow, is the main international airport serving London, the capital and most populous city of England and the United Kingdom.