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  • Snail Fronts and Salt Marsh Die-Offs

    Snail Fronts and Salt Marsh Die-Offs

    Data Points

    Researchers studied whether periwinkle snail fronts expand mudflats and contribute to salt marsh die-offs.

  • Tracking Global Changes in Forest Cover

    Tracking Global Changes in Forest Cover

    Data Points

    Researchers used satellite imagery analyze the amount of forest that was lost annually across the globe between 2000 and 2012.

  • Cell Division and Cancer Risk

    Cell Division and Cancer Risk

    Data Points

    Cancer is typically attributed to hereditary and environmental factors, but these only explain a fraction of overall cancer risk. In this study, researchers investigated how a third factor—chance genetic mutations that occur during stem cell division—may contribute to the overall rate of cancer incidence in different body tissues.

  • Bat Echolocation

    Bat Echolocation

    Data Points

    In this study, researchers tested whether bats change their behavior while hunting based on feedback from echolocation.

  • Dating Corn Domestication Using Carbon Isotopes

    Dating Corn Domestication Using Carbon Isotopes

    Data Points

    To study the change in diet as human populations changed lifestyles from hunter-gatherers to agriculturalists, scientists measured carbon isotopes in the collagen tissues of human skeletons from North America.

  • Patterns of Zoonotic Disease

    Patterns of Zoonotic Disease

    Data Points

    In this study, scientists analyzed previously published data on terrestrial mammal zoonotic host species and the pathogens they carry to search for global patterns of zoonotic disease distribution.

  • Dead Zones in Coastal Ecosystems

    Dead Zones in Coastal Ecosystems

    Data Points

    Researchers overlaid the locations of more than 400 hypoxic systems linked to eutrophication on a map of the global “human footprint.”

  • Thermoregulation in Dinosaurs

    Thermoregulation in Dinosaurs

    Data Points

    Grady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.

  • Selective Breeding in Maize

    Selective Breeding in Maize

    Data Points

    Researchers performed the longest-running, controlled artificial selection experiment to study whether they could increase the protein concentration of maize (corn) by selective breeding.

  • Using Genetic Evidence to Identify Ivory Poaching Hotspots

    Using Genetic Evidence to Identify Ivory Poaching Hotspots

    Data Points

    A team of scientists analyzed the DNA from seized ivory to determine where the ivory from poached elephants came from.

  • Origin of a Gene Mutation Causing Early-Onset Alzheimer’s Disease

    Origin of a Gene Mutation Causing Early-Onset Alzheimer’s Disease

    Data Points

    A team of scientists built a pedigree of a large extended family in Antioquia, Colombia, that has a high prevalence of early-onset familial Alzheimer’s disease due to a mutation in the PSEN1 gene. Worksheets also available in Spanish.

  • Amylase Copy Number and Diet

    Amylase Copy Number and Diet

    Data Points

    A team of scientists investigated whether there is a correlation between the number of AMY1 gene copies and the type of diet (high-starch or low-starch) of a population.

  • Identifying Autism Genes by Tracking Gene Mutations

    Identifying Autism Genes by Tracking Gene Mutations

    Data Points

    A team of scientists used homozygosity mapping to map SNPs on chromosome 3 in a family with an autistic son to identify a likely gene that caused the disorder.

  • Data Points

    Data Points

    Data Points

    BioInteractive’s Data Points are a monthly series that features a graph or figure from a scientific journal article for students to interpret and discuss as a class. The student handout includes the...

  • Effects of Predation on the Niche of Lizards

    Effects of Predation on the Niche of Lizards

    Data Points

    A team of scientists studied the effects of introducing a lizard predator on the food webs of a group of small islands in the Bahamas.

  • Efficacy of a Treatment for Chronic Myeloid Leukemia

    Efficacy of a Treatment for Chronic Myeloid Leukemia

    Data Points

    Dr. Brian Druker and colleagues monitored white blood cell counts in six patients with chronic myeloid leukemia treated with the drug, STI571, which blocks the activity of the cancer-causing tyrosine kinase BCR-ABL.

  • Trends in Atmospheric Carbon Dioxide

    Trends in Atmospheric Carbon Dioxide

    Data Points

    Charles David Keeling began measuring atmospheric carbon dioxide (CO2) in 1958 at the Mauna Loa observatory on the big island of Hawaii.  This graph shows atmospheric carbon dioxide concentration in parts per million (ppm) by volume from 1958 to 2016. Worksheet also available in Spanish.

  • Resistance to Coral Bleaching

    Resistance to Coral Bleaching

    Data Points

    To test whether corals can become more resistant to bleaching, Dr. Steve Palumbi and colleagues performed a series of experiments in the U.S. National Park of American Samoa off of Ofu Island. Worksheets also available in Spanish.

  • Genetic Origin of Variation in Human Skin Color

    Genetic Origin of Variation in Human Skin Color

    Data Points

    Dr. Rebecca Lamason and colleagues studied the genetic origin of variation in human skin color using a model organism, the zebrafish.

  • Modeling Ecosystem Effects of Termite Mound Patterns

    Modeling Ecosystem Effects of Termite Mound Patterns

    Data Points

    Dr. Corina Tarnita and colleagues studied how a pattern of termite mounds across a dryland ecosystem enhances resilience against desertification.

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