A black and white headshot of Andrew Carstens

Andy Carstens

Articles by Andy Carstens

A male and female Chiriqui harlequin frog (<em>Atelopus chiriquiensis</em>) photographed in 2010. The species was declared extinct in 2019.

How Do Scientists Decide a Species Has Gone Extinct?

A Cape ground squirrel sits upright on its hind legs, holding its forelimbs up to its face.

Animals Are Shape-Shifting in Response to a Warming World

Artist&rsquo;s rendition of neural connections, with inactive neurons in the background

Ketamine Flips a “Switch” in Mice’s Brain Circuitry: Study

Diagram of the causes of mortality in the army in the east.

Diagrammatic War, 1858

Illustration of myelinated neuron axons in light blue, with spindly blue and purple cells interspersed among them.

A Gene Variant Linked to Alzheimer’s May Disrupt Myelin Production

fluorescently labeled microscopy cross-section of bone

Cancer Cells in Mice May Hitch a Ride with Bone-Healing Stem Cells

Fernanda, a Fernandina giant tortoise (<em>Chelonoidis phantasticus</em>), was identified in 2019, decades after her species supposedly went extinct.

When an Extinct Species Is Found Alive, What Happens Next?

A mesquite tree in an arid environment

Climate Change May Favor Nitrogen-Fixing Plants

an immune cell in blood

Why Viral Infections Are More Severe in People with Down Syndrome

Kentish plover standing by nest with eggs

Avian Deception More Widespread Than Previously Thought

A black and white photo of a woman in a plumed hat in a laboratory classroom with several men

Birth of The Pill, 1956–1960

satellite view of Hurricane Ian in between Cuba and Florida&#39;s Gulf Coast

Researchers in Ian’s Path Brace for the Storm

A building behind trees

Ford Foundation Sunsets Diversity Fellowships

A white deer mouse on sand surrounded by plants

Are We In the Midst of a Silent Mass Extinction?

An orange toad perched on a leaf

Past Malaria Surges Linked to Amphibian Die-off

Image of small blue creatures called Nergals. Some have hearts above their heads, which signify friendship. There is one Nergal who is sneezing and losing health, which is denoted by minus one signs floating around it.
June 2025, Issue 1

Nergal Networks: Where Friendship Meets Infection

A citizen science game explores how social choices and networks can influence how an illness moves through a population.

View this Issue
An illustration of green lentiviral particles.

Maximizing Lentivirus Recovery

cytiva logo
Unraveling Complex Biology with Advanced Multiomics Technology

Unraveling Complex Biology with Five-Dimensional Multiomics

Element Bioscience Logo
Resurrecting Plant Defense Mechanisms to Avoid Crop Pathogens

Resurrecting Plant Defense Mechanisms to Avoid Crop Pathogens

Twist Bio&nbsp;
The Scientist Placeholder Image

Seeing and Sorting with Confidence

BD

Products

The Scientist Placeholder Image

Waters Enhances Alliance iS HPLC System Software, Setting a New Standard for End-to-End Traceability and Data Integrity 

The Scientist Placeholder Image

Agilent Unveils the Next Generation in LC-Mass Detection: The InfinityLab Pro iQ Series

agilent-logo

Agilent Announces the Enhanced 8850 Gas Chromatograph

parse-biosciences-logo

Pioneering Cancer Plasticity Atlas will help Predict Response to Cancer Therapies