May 2, 2019
And you thought measles had been
eradicated in the United States, and that it was a harmless
childhood annoyance. Guess what? Not so much.
Measles kills, as does science
On This Week’s Show
- Science news of the week
More than 1,000 quarantined
amid measles fears at Los Angeles universities
Do you remember a few weeks ago
when we spoke about flat Earthers? And we agreed that whilst they
pay be as potty as a pantry, at least they aren't doing anyone any
harm. We'll we can't say the same for anti-vaxxers and this as been
demonstrated in LA where over 1000 people have been quarantined or
sent home over measles fears in universities.
U.S. is experiencing a 25 year high in measles cases
- Quarantine was imposed on people who were at
risk of exposure to people with confirmed measles cases based on
shared study spaces. It was also legally binding.
- Quarantine also covered no travel on public
transportation, including planes, trains, buses or
cases have been confirmed. Over 3x more than at the same time last
- Numbers of quarantined:
State-LA reported 875 students, faculty and staff
129 students and faculty were quarantined
have been released
under the quarantine are legally
required to stay at home and avoid
contact with others.
- Forbidden from traveling by public
they had to travel for an emergency, they were told to notify
public health officials first.
I would seriously like to end
this story on a positive note, which I appreciate is hard. But with
this worrying anti-science movement that is getting a lot of
attention at the moment, maybe, just maybe, when kids really
starting getting horrifically ill and inevitably dying. Hopefully
that will act as a wake up call for why we should probably listen
to people who know what they are talking about, so we can the deal
with potentially bigger issues, like y’know, the
Critics always say that
scientists promise disaster but it never happens. You can’t really
argue against dying kids.
The Washington Post
Scientists Think They've
Finally Figured Out Why DEET Is So Effective
Summer’s just around the corner,
and what could be nicer than a summer evening with friends in the
back garden by the grill, having a few beers. Sounds like a
I hate mosquitoes and whatever
works against them I’m happy to use, irrelevant of its mechanism of
work! However, a long lasting myth on how a popular bug-repellent
works was recently busted!
has long been known to be the most effective mosquito repellent
available, but researchers weren't sure why or how it
- Question: what is DEET?
- DEET, or
diethyl-meta-toluamide, is the most common active ingredient in
- Before, it was believed that the chemical
blocks the mosquito olfactory receptors for volatile molecules in
human sweat and breath, essentially making them blind for where the
source of their bloody dinner was.
- According to a new study published online in
the 6 May edition of Cell Current Biology, DEET works because mosquitoes can taste our
body with their legs, and it makes them think our skin tastes
- Earlier research showed that DEET doesn't keep
mosquitoes from landing on people.
- This new research had six stages:
- First, the researchers offered mosquitoes one
of three foods: sugar water, sugar water mixed with DEET or sugar
water mixed with another bitter chemical. The insects preferred the
plain sugar water to either chemical mixture, but didn't
distinguish between DEET and the bitter substance.
they took that bitter chemical, not the DEET, and covered their
arms in it at high concentrations. The mosquitoes weren’t
impressed, and just landed and began drinking the blood of
they served up a sample of warm blood protected by a membrane that
mimicked skin. When DEET or other bitter substances were mixed in
the blood the mosquitoes rejected it.
- Here’s where it starts to get interesting. They
then applied the chemicals to the membrane, but the blood
underneath was clean, analogous to an actual person. Result:
Mozzies where not disturbed by the bitter compounds, but didn’t
want anything to do with the DEET covered membrane.
- Fifth, they then presented a patch of membrane
with DEET on it with blood underneath. But the patch of skin was
too small for them to land on and drink the blood at the same time.
They still drank which suggests that DEET doesn’t bother their
finally, they then put a special adhesive on their legs to shield
their leg taste buds. The mosquitoes still drank the blood. This
suggest that it’s DEET’s effect on their legs that is repelling
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This show is produced by the
Blue Streak Science team, and edited by Pro Podcast Solutions.
Our hosts today were Nevena
Hristozova, and Chris MacAlister.
I’m JD Goodwin.
Thank you for joining
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