[ExI] Fwd: Eat more fish: the most climate-friendly and nutritious options compared to meat

Wed Sep 14 20:22:24 UTC 2022

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From: Nature Briefing <briefing at nature.com>
Date: Wed, Sep 14, 2022 at 12:46 PM
Subject: Eat more fish: the most climate-friendly and nutritious options
compared to meat
To: <foozler83 at gmail.com>

What matters in science |
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Wednesday
14 September 2022
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Hello *Nature *readers,
Today we learn about climate-friendly and nutritious fish, discover what
scientists are learning about severe monkeypox and learn that the paywall
is down for citations in Crossref.
[image: Close-up of a crate of mackerels for sale at a market in Genova,
Italy.]
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Small fish, such as mackerel, have a high nutritional value and a low
carbon footprint. (Getty)
The most climate-friendly seafood
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Replacing meat with certain types of sustainably sourced seafood could help
people to reduce their carbon footprints without compromising on nutrition
<https://nature.us17.list-manage.com/track/click?u=2c6057c528fdc6f73fa196d9d&id=b6e865d9e2&e=d520e39c16>,
finds an analysis of dozens of marine species that are consumed worldwide.
The study points to options that generate fewer greenhouse-gas emissions
and are more nutrient-dense sources of protein than beef, pork or chicken:

   - Farmed bivalves: shellfish. such as mussels, clams and oysters
   - Wild-caught pink salmon (*Oncorhynchus gorbuscha) *and sockeye
salmon (*Oncorhynchus
   nerka*)
   - Wild-caught, small, surface-dwelling (pelagic) fish, such as
   anchovies, mackerel and herring

Whitefish, such as cod (*Gadus *sp.), also had a low climate impact, but
were among the least nutrient-dense food. Wild-caught crustaceans had the
highest emissions, with a carbon footprint rivalled only by that of beef.
The authors note that their emissions data do not include ‘post-production’
emissions, such as those generated by refrigeration or transport.

Nature | 4 min read
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Reference: *Communications Earth & Environment*
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paper
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[image: BETTER FISH TO FRY. Graphic showing some seafood has a higher
nutritional value and generates fewer emissions than meat.]
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What we know about severe monkeypox
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So far into the global monkeypox outbreak, scientists are breathing a
cautious sigh of relief. The death rate is lower than expected from
historical data
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— about 0.04%, compared with the 1–3% reported during outbreaks caused by a
similar viral strain in West Africa. Although people typically experience
fewer lesions than in past outbreaks, they seem more likely to appear on
sensitive mucosal tissues, such as those in the throat. These factors have
caused researchers to re-evaluate what they thought they knew about severe
monkeypox.
Nature | 5 min read
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Crossref citations come out into the open
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The reference lists in Crossref are now free to read and reuse. The
Crossref database registers DOIs, or digital object identifiers, for many
of the world’s academic publications. Open-science advocates have for years
campaigned to make papers’ citation data accessible under liberal copyright
licences so that they can be studied
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to identify research trends and areas of research that need funding, and to
spot when scientists are manipulating citation counts.
Nature | 3 min read
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How this jellyfish can live forever
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The tiny translucent jellyfish *Turritopsis dohrnii* can revert to an
immature polyp state and revive itself again and again — effectively making
it immortal. Researchers have now sequenced the jellyfish’s genome and studied
the genes involved in its rejuvenation
<https://nature.us17.list-manage.com/track/click?u=2c6057c528fdc6f73fa196d9d&id=053fbafc7a&e=d520e39c16>.
They found that genes associated with DNA storage were highly expressed in
adult jellyfish, but reduced as the animals transformed into polyps.
However, genes linked to pluripotency, or the ability of cells to turn into
any cell type, were increasingly expressed as the jellyfish reverted.
The New York Times | 4 min read
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Reference: *Proceedings of the National Academy of Sciences*
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paper
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Features & opinion
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part from its small size and the fact that its nine justices are appointed
for life. Three members appointed by former president Donald Trump have
tipped the balance to an ultraconservative supermajority that is often
sceptical of — if not outright hostile towards — science
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When structural-engineering researcher Nan Hu needed to produce a short
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News & views
[image: Composite photograph and illustration image of fossilized
<i>Auroralumina attenboroughii</i>]
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A fossilized *Auroralumina attenboroughii* appears to have tentacles and
goblet-like structures that arise from tissue called the periderm. (Dunn et
al./Nat. Ecol. Evol. (CC BY 4.0))
Fossil of one of the oldest-known animals
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An exciting new fossil reveals key features of cnidarians — the ancient
group of animals that includes jellyfish and corals. *Auroralumina**
attenboroughii* — named in honour of the naturalist David Attenborough —
throws the door open on the Ediacaran period (635–539 million years ago),
when the oldest-known ancestors of this grouping plied the seas. Its body
plan is very different from that of other Ediacaran organisms: two
bifurcating polyps enclosed in a rigid skeleton, with evidence of simple,
densely packed tentacles
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It is only a single, imperfect fossil, but it offers tantalizing
information about the earliest-known stages of animal evolution.
Nature
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6 min read
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Quote of the day “Gobsmacking — a dinosaur ribcage sticking out of
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Palaeontologist Steve Brusatte responds after a man in Portugal found an
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