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todayilearned
Jul 04, 2020
TIL a Venus flytrap can count the number of times its victims touch the hairs on its leaves. One touch does nothing, two closes the trap, three primes the trap for digestion, five triggers the production of digestive enzyme. So, victims tell the plant to start killing it and how vigorously to do so.
bumbling fly
charles darwin
comenius university
dead fly
digestive efforts
digestive enzymes
digestive enzymes.after
electrical impulse
electrical impulses
fifth electrical impulse.the plant
first impulse
fly
flytrap traps.we start
gland cells
green stomach
hedrich’s latest study
inner surfaces of the traps
large fly struggles
life
long time
mystery
next morning
nutrient-poor swamps
open halves of the flytrap
outside world
own tissues.after
plant
plants
primes
production of digestive enzymes
rainer hedrich
second signal.the
sensory hairs
set of transporter enzymes
single impulse
so.the fly
so.the venus flytrap
spike of calcium ions
struggles of its prey
such false alarms
touch
trap
trap opens
trap snaps shut.the fly
traps
trap’s calcium levels
trigger hairs
unpublished work
venus flytrap
water
todayilearned
Apr 23, 2020
TIL the first reliable pregnancy tests involved doctors injecting women's urine into frogs; if they laid eggs without mating, the woman was pregnant. This test was called the "Hogben Test" and was used widely for about 20 years until doctors began injecting mice and rabbits instead.
a-z test
accidental finding
advanced pregnancy
artist eben kirksey
colleague cari romm
colleague charles bellerby
early career
female xenopus
folk pregnancy tests
frog
frog eggs
frog world
frogs
german scientists bernhard
gland—a pea-sized hormone
greenish-gray animal
hogben
hogben test
hogben’s colleagues
human chorionic gonadotropin
human urine
immature female mice
irascible zoologist
lancelot hogben
local amphibians
long time
loretta—a frog
medical historian jesse
modern pregnancy tests
native african home
obsolete pregnancy test
pregnancy diagnosis station
pregnancy test
pregnancy testing
pregnant woman
pregnant women
reliable test
scientist edward elkan
similar work
south africa
strident left-wing politics
sub-saharan africa
unbroken streak
unwanted pregnancy
urine specimen
would-be mother peed
xenopus
xenopus colonies
xenopus museum
xenopus test
todayilearned
Jan 22, 2020
TIL a 34-yr-old French-UK woman named Emma Perrier was catfished by a 53-yr-old UK man who was using a 35-yr-old Turkish model's photos. She tracked down the real model, Adem Guzel, they hit it off via FaceTime; about a year later, he flew to London and they became a couple.
adem
adem guzel
alan
alan stanley
alan’s scam
arabian catfishing story
black-and-white modeling photograph
brilliant emma
charming ronnie
dangersome male model
diamond engagement ring
difference—but emma
emma
emma facetimed
emma perrier
emma’s affections
emma’s heartache
emma’s message
emma’s profile
emma’s relationship
favorite photograph
free messaging app
french alps
high-energy barbell class
italian chain restaurant
italian named ronaldo
leafy suburb southwest
leather jacket
london
long time
nearby london hilton
new assistant manager
online pen pals
opposite sex
perrier mineral water
profile pictures
random male model
real name alan
reality-check relationships online
red heart emojis
ronnie
ronnie’s message
shop fitter—a decorator
sixth-biggest french city
small talk
spanish waiter
text message
turkish model
united kingdom
west midlands
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