Choose a topic to see what the evidence says and where it is uncertain.
Qualified applicants can be overlooked for reasons that have little to do with their skills. DEI efforts aim to reduce those barriers and give people a fair chance. A DEI label does not tell you whether someone can do the job.
Large studies across countries show that vaccines do not cause autism. The evidence covers MMR, thimerosal and aluminum. A diagnosis after vaccination does not establish a cause; reliable comparisons show whether autism is more common among vaccinated children.
Earth is warming, and human activities are the main cause of the recent long-term rise. Burning coal, oil and gas adds heat-trapping gases to the air. Natural changes alone do not explain the pattern.
Measles vaccination prevents a highly contagious disease that can cause serious illness and death. MMR is highly effective and does not cause autism. Vitamin A can support measles care, but it does not replace vaccination. Serious side effects are rare.
COVID vaccines reduce severe illness, hospital treatment and deaths. Updated doses can add protection after earlier vaccination or infection. Protection against infection fades. Serious side effects are rare; benefits and risks depend on age, health and vaccine.
An immigration status is not a verdict on a person. Research does not support labeling undocumented immigrants as a group of dangerous criminals.
The US has the resources to make healthcare available to everyone. Whether a particular plan saves money—and who pays more—depends on how it is designed. Universal coverage does not mean every person’s taxes or bills go down.
Nationality and religion are different things. Crime records often describe citizenship or where people’s families came from, not their faith. Those records cannot establish that Islam causes violence.
Vaccines prevent diseases that can cause disability and death. Their benefits are supported by trials and large studies. Serious side effects are rare, and the balance depends on the vaccine, age and health of the person receiving it.
Vaccine ingredients have specific jobs, such as strengthening protection or keeping the vaccine stable. Safety depends on the amount, chemical form and how it enters the body. Studies support the safety of the amounts used. Serious reactions are rare.
Adding extra gaps to a childhood vaccine schedule has no proven general health benefit. Recommended schedules aim to provide protection when children need it. Missing age-appropriate doses can leave children less protected. Medical exceptions and country-specific schedules still matter.
Current evidence has not established that COVID vaccines cause cancer or harmful changes to people’s DNA. Some studies report cancer associations, but their methods cannot show that vaccination caused them. Traces of manufacturing DNA are real; finding a fragment is not proof of harm.
HPV vaccines prevent infections that can lead to cervical cancer. Large studies and reviews have found no increased infertility risk. Protection is strongest before HPV exposure. Serious side effects are rare, and vaccination does not replace cervical screening.
Babies can catch hepatitis B during birth or through infected blood. Infection in infancy is especially likely to become chronic. Vaccination prevents infection, and a birth dose provides early protection. Countries differ on which babies receive it at birth.
mRNA COVID vaccines help protect against severe illness during pregnancy. Large studies have not found increased miscarriage or infertility. Serious side effects are rare. Other vaccine types need their own evidence, and recommendations differ by country.
Try “MMR”, “immigration” or “healthcare”.