Hannah Fry Profile picture
Mar 9 7 tweets 2 min read
After an uncomfortable brush with some less than angelic corporations last year, I started digging into the green credentials of the various companies I’d invested in with my ISA and discovered what I imagine a lot of you already knew: there is a LOT of greenwashing going
on.
There is something called an ESG rating that companies use to demonstrate their environmental credentials. If you have a stocks and shares ISA, you can look up the ratings of where your investments are. It might even give a rosy picture. The problem is ESG ratings are bollocks.
I dug some more and came across this company: @clim8invest. They have an app with a normal stocks & shares ISA, but one that only invests in companies actively working to tackle clean energy and technology.
I’ve long thought that we’re only going to turn a corner on the climate crisis if the market gets behind greener technologies, so that they become the most profitable thing to do as well as the right thing.
Anyway. I ended up chatting to the founders of Clim8 and I think they’re a force for good, so I’m going to be doing some work with them. Channel 4 are backing them too so you’ll hear my voice popping up on their new telly ad. #ad
Obviously don’t take financial advice from me (because a) it means putting capital at risk & b) what the hell do I know). But if you too are someone who feels uncomfortable investing in companies w/questionable ethics and credentials, just know there are options for your savings.
Capital at risk. (Obvs).

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More from @FryRsquared

Jan 6, 2021
Irredeemably, y'say?

Well that sounds like a challenge..
Tell you what. How about this one as a start. A glorious and ingenious way to keep cake tasting delicious thanks to maths:

Cake's not your thing? No problem! How about the mathematical way to guarantee a fix to a wobbly table?

Read 9 tweets
Mar 2, 2020
In a strange twist of fate, it seems the first coronavirus patient to be infected in the UK is from Haslemere -the very place we used for our 2018 citizen science experiment: the BBC Pandemic.

Here's a news piece from the time. Bit close to home, huh.

telegraph.co.uk/global-health/…
It's an extraordinary coincidence. But for me, the most powerful bit of the original tv prog was this:

This is our 2018 simulation of the difference that everyone washing their hands 5-10 times a day might make to the spread of a flu-like virus.

See how much time it buys us?
That simulation is based on real data from tens of thousands of people who volunteered to be part of our experiment, using mobile phones to see how pandemics might spread.

The project was a huge undertaking by a team led by Julia Gog @Cambridge_Uni & @AdamJKucharski at @LSHTM
Read 9 tweets
Jan 28, 2020
Last week, the lovely folk at National Grid showed me around their amazing underground tunnels.

Lots of pics of the trip over on my Insta, but for you Twitter - the One True Kingdom of the nerds - I've got something much more exciting.

BECAUSE THEY ALSO SHOWED ME THEIR DATA.
@nationalgriduk Okay okay okay. Let's start with a good one.

Ever heard about the electricity surge at the end of a popular tv show as we all stick on the kettle?

It's a uniquely British phenomenon and it's totally true. Here's the Britain's got talent final in 2005 as an example..
@nationalgriduk But so is the opposite. Sometimes there are big drop-offs in power too..

Ready for a game?
Read 13 tweets
Jan 8, 2020
There is BIG money involved in predicting the success of movies, books & music. Yet every decent past attempt to see into the future has failed.

Think about it. If it *was* possible would Cats be a thing??

Here, in 5 screenshots is a chunk on past attempts from my book. 1-3:
And 4-5:
Read 6 tweets
Nov 23, 2019
Over-hype in Ai: a thread. 1/8
Let's start with a story. Remember this one from last year? An algorithm that can tell if you're gay or straight from a single photo. It's a prospect that is both awesome and terrifying. 2/8

telegraph.co.uk/technology/201…
Especially when you realise that these things are getting it right 81% of the time.

Terrifying, right?

3/8
Read 8 tweets
Aug 13, 2019
I want to tell you a little story about calculus.

Or, as I shall now refer to it, "Mathematical Alchemy" Image
It started when these two real-life wizards, Newton & Leibnitz, came up with an unbelievably clever way to describe how things change, and in doing so, let the rest of us mere mortals spend the ensuing centuries wrestling the physical world into submission. Image
This stuff is like catnip for mathos. Here I am with some of Newton's original writing. Look how excited I am just to be in the presence of some calculus! Image
Read 8 tweets

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