SortStack #1925 — 2031-09-16

By weight · Order from lightest to heaviest.

1. A single sesame seed 3 mg

   Sesame is one of humanity's oldest oil crops, domesticated in South Asia more than 3,000 years ago.

2. An adult brown rat 350 g

   Rats emit ultrasonic giggles when tickled and come back for more — research that helped earn an Ig Nobel Prize.

3. A Harley-Davidson Road King motorcycle 365 kg

   Harley once tried to trademark its V-twin engine's 'potato-potato' exhaust rumble, then dropped the case in 2000.

4. The London Eye observation wheel 2.1K t

   It was meant to stand for just five years when it opened in 2000; instead it became the UK's most popular paid attraction.

5. The Eiffel Tower 10.1K t

   The iron grows in summer: heat expands the sun-facing side, leaning the top away from the sun and adding around 15 cm of height.

6. The CN Tower in Toronto 117.9K t

   It held the title of world's tallest free-standing structure for 32 years, and its glass floor was the world's first.

← All puzzles · Play today’s SortStack