124 votes

Did hominids and non-avian dinosaurs ever coexist?

No. Non-avian dinosaurs were extinct about 65 million years ago, as the most recent dinosaur bone was directly dated as being 64.8 ± 0.9 Ma old. The second dinosaur bone sample from Paleocene ...
Sklivvz's user avatar
  • 78.7k
86 votes
Accepted

Are there too few Supernova Remnants to support the Milky Way being billions of years old?

There are many reasons why this is wrong. The first one is the assumption of 1 supernova per 25 years. That was the value arrived at in Gustav Tammann's article published in 1970. Others got values up ...
hdhondt's user avatar
  • 5,846
66 votes
Accepted

Is the discovery of tuff amongst dinosaur fossils in Utah incompatible with scientific consensus about dating of the fossils?

Has tuff found amongst the deposits at the Dinosaur National Monument? Yes. The most famous section of the rocks in Morrison Formation in Dinosaur National Monument, the Brushy Basin Member, is chock ...
David Hammen's user avatar
  • 15.2k
27 votes
Accepted

Have coelacanth fossils younger than 65 million years been found?

According to a Nature article from 1998 this is true (or at least, was in 1998). Coelacanths were known for decades, but only as fossils. They appeared in the fossil record around 370 million years ...
PhillS's user avatar
  • 3,043
21 votes

Did hominids and non-avian dinosaurs ever coexist?

There is a simple factual response based on the fossil record, "No. Dinosaurs and people did not coexist" but this does not really answer the question "did humans draw dinosaurs?" -- with the implicit ...
BurnsBA's user avatar
  • 1,533
18 votes
Accepted

Are results of carbon dating cross referenced by other methods?

Carbon dating has been extensively cross-referenced by tree-ring dating (dendrochronology). Carbon dates that are corrected by tree-ring dating are called calibrated. Tree-ring dating relies on the ...
hdhondt's user avatar
  • 5,846
18 votes

Has the speed of light significantly slowed down over the past 6,000 years?

It turns out that SN1987A did pretty much what I suggested. It had a ring of material that had been thrown off the star some 20,000 years ago. When the star exploded the light from the explosion ...
Paul Johnson's user avatar
  • 16.6k
15 votes
Accepted

In 2014, did nearly half of all Americans believe in Creationism?

The figures are roughly confirmed by a different 2014 survey by Pew Research (Sample size = 35,071) : 33% believe "Humans and other living things have evolved due to natural processes such as natural ...
DavePhD's user avatar
  • 107k
12 votes
Accepted

Have paleontologists systematically ignored dinosaur DNA that does not match the evolutionary model?

The short answer: No The long answer: Also No Here is why this does not hold water: Until recently we were not able to extract soft tissues recently as in last 10 years. This is to the best of my ...
Cc Dd's user avatar
  • 458
12 votes

Has the speed of light significantly slowed down over the past 6,000 years?

TL;DR Here's the gist of my answer: Some physicists have been working for decades on theories involving a variable speed of light. These theories are not widely accepted within the physics community. ...
HDE 226868's user avatar
  • 11.1k
7 votes

Are results of carbon dating cross referenced by other methods?

Known history Because the range of times which can be measured by radiocarbon dating overlap with known history, it can be cross-checked with known history established by other means. The original ...
Schwern's user avatar
  • 19.6k
5 votes
Accepted

Are new genes created through duplication?

Gene duplication is a very important way of creating new genes and hence it helps organisms to evolve. Once a gene is duplicated, the "spare" copy of the gene is effectively not needed by the cell, ...
hdhondt's user avatar
  • 5,846
4 votes

Have scientists found 700,000-or-more visible annual ice layers?

The counting of layers such as tree rings, glacial varves, and annual ice layers, is a reliable way of establishing a chronology. As far as the age of Earth is concerned, these methods provide a ...
elliot svensson's user avatar
3 votes

Did hominids and non-avian dinosaurs ever coexist?

Hominidae Temporal range: Miocene–present, 17 – 0 Mya Dinosaur Temporal range: Late Triassic–Present, 233.23 – 0 Mya all non-avian dinosaurs, estimated to have been 628-1078 species, as well as many ...
Mazura's user avatar
  • 410
1 vote

Does the radioactivity on Hiroshima's soil affect radiometric dating?

This claim is wrong for so many reasons. 1) Radiometric dating relies on certain unstable elements decaying into stable ones over time. The rate of that decay is constant and can be used for ...
Tgr's user avatar
  • 1,128

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