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Author: Amanda Semler

I'm a PhD candidate in Earth System Science at Stanford University, and I study how microbes in deep ocean sediments produce and consume greenhouse gases. I'm a native of the landlocked state of Minnesota, so I've always been fascinated by the ocean. When I'm not in the lab, I love to race triathlons, forward “The Onion” articles to friends and family, and hike with my hound dog Banjo.
The Gene That Stings You
Genetics

The Gene That Stings You

Scientists from Cornell University demonstrate that a single genetic on/off switch controls the emergence of stinging cells in Cnidarians.
June 8, 2022 Amanda Semler
Tying Prehistoric Climate Change to Oceanic Methane
Climate Change

Tying Prehistoric Climate Change to Oceanic Methane

Scientists from Texas A&M use preserved microbial lipids to tie prehistoric climate change to widespread oceanic methane release.
April 13, 2022 Amanda Semler
A Worrisome Species Shift in the Humboldt Current
Fisheries

A Worrisome Species Shift in the Humboldt Current

By examining ancient fish bones buried in sediments, researchers caution about a potential collapse of anchovy fisheries.
February 7, 2022 Amanda Semler
A New Way to Make Hydrocarbons
Chemistry

A New Way to Make Hydrocarbons

Marine scientists used isotopic fingerprinting techniques to discover a new way that the hydrocarbons in oil and gas are formed.
January 4, 2022January 4, 2022 Amanda Semler
First Report of Biologically Produced Elemental Carbon
Microbiology

First Report of Biologically Produced Elemental Carbon

Deep-sea microorganisms have been found to produce elemental carbon, although the biological reason remains unknown.
December 9, 2021December 10, 2021 Amanda Semler
Sea Ice Diversifies Antarctic Phytoplankton
Microbiology

Sea Ice Diversifies Antarctic Phytoplankton

A new study finds that communities of phytoplankton become less diverse and export less carbon as sea ice melts.
November 8, 2021 Amanda Semler
Oxygen Tied up in Tides
Microbiology

Oxygen Tied up in Tides

A new study connects ocean tides with the oxygenation of our atmosphere.
October 4, 2021October 6, 2021 Amanda Semler
Eat Your Probiotics
Coral

Eat Your Probiotics

A new study shows that an introduction of beneficial bacteria may help corals survive marine heatwaves.
September 2, 2021September 1, 2021 Amanda Semler
Unicellular Predators Feast at Hydrothermal Vents
Ecology

Unicellular Predators Feast at Hydrothermal Vents

Hydrothermal vent fluids support an intriguing food web, and unicellular protistan predators play an outsized role.
August 4, 2021August 4, 2021 Amanda Semler
Under Pressure: Novel Experiments in Microbiology on the Seafloor
Microbiology

Under Pressure: Novel Experiments in Microbiology on the Seafloor

Evaluating the effect of pressure on marine microorganisms is notoriously difficult. New research attempts to overcome this challenge by comparing…
May 5, 2021April 30, 2021 Amanda Semler
Enormous Source and Sink of Hydrocarbons Discovered in the Ocean
Microbiology

Enormous Source and Sink of Hydrocarbons Discovered in the Ocean

A team of scientists just discovered an enormous new source of hydrocarbons to the ocean: cyanobacteria. But what does their…
April 6, 2021 Amanda Semler
Where Does Arctic Ice Melt Go?
Physical oceanography

Where Does Arctic Ice Melt Go?

Water in the Arctic Ocean is getting fresher as polar sea ice melts. But that fresher water doesn’t stay in…
March 3, 2021March 1, 2021 Amanda Semler
Living Fossils Hidden in Plain Sight
Microbiology

Living Fossils Hidden in Plain Sight

Around 2.4 billion years ago, the emergence of cyanobacteria multiplied oxygen concentrations in our atmosphere by almost a million, and…
February 4, 2021February 1, 2021 Amanda Semler
Lunar Power Over Methane Emissions
Chemistry

Lunar Power Over Methane Emissions

Solid methane hydrates in the Arctic Ocean are slowly leaking methane into the atmosphere, and a team of scientists has…
January 19, 2021January 19, 2021 Amanda Semler
Antarctic Sea Ice Feeds Microbes with a Surprising Ability
Microbiology

Antarctic Sea Ice Feeds Microbes with a Surprising Ability

By sampling seawater around Antarctica, a Japanese research team has discovered microorganisms that can transform nitrogen gas into more biologically…
December 10, 2020December 9, 2020 Amanda Semler
Fossilized Deep-Sea Corals Reveal Ancient Ocean Circulation Patterns
Climate Change

Fossilized Deep-Sea Corals Reveal Ancient Ocean Circulation Patterns

An increase in atmospheric carbon dioxide concentrations helped end the last ice age. But what caused the carbon dioxide increase…
November 9, 2020December 9, 2020 Amanda Semler
Artificial Upwelling Saves Corals from Bleaching
Coral

Artificial Upwelling Saves Corals from Bleaching

Coral reefs are under threat due to a warming climate. Learn about a technologically-savvy new way to counteract the effects…
October 12, 2020October 12, 2020 Amanda Semler
So You Thought the Heatwave was Over?
Climate Change

So You Thought the Heatwave was Over?

Satellites that measure sea surface temperature have demonstrated that marine heatwaves are becoming more frequent, longer, and more intense as…
September 11, 2020August 18, 2021 Amanda Semler
Life at One Hundred Million Years Old
Microbiology

Life at One Hundred Million Years Old

A team of scientists traveled to the South Pacific Gyre and discovered 100 million year old, energy-starved microorganisms hidden below…
August 14, 2020September 11, 2020 Amanda Semler
Undersea Volcanoes Explode Dramatically
Geology

Undersea Volcanoes Explode Dramatically

Under the incredible pressures of the deep sea, how do volcanoes erupt? And how do these eruptions affect the marine…
July 15, 2020 Amanda Semler

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