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Life and Environments Through Time (LET)

U.S. National Science Foundation

The Life and Environments Through Time (LET) program supports research that advances knowledge about the patterns and processes relating to the origin and evolution of Earth’s climate, environments, life, and sedimentary record. This research takes place at the molecular, local, regional, and

Funding
Estimated total program funding: $14,000,000
Category
Research & Science
Status
ROLLING
Deadline
Rolling

About

The Life and Environments Through Time (LET) program supports research that advances knowledge about the patterns and processes relating to the origin and evolution of Earth’s climate, environments, life, and sedimentary record. This research takes place at the molecular, local, regional, and global scales from the Archean Eon through the Holocene epoch. LET-supported research can be useful for predicting and planning for future global change, and for the maintenance and security of ecosystem services and human societies.

Eligibility

*Who May Submit Proposals: Proposals may only be submitted by the following: -null -Non-profit, non-academic organizations: Independent museums, observatories, research laboratories, professional societies and similar organizations located in the U.S. that are directly associated with educational or research activities. -Institutions of Higher Education (IHEs): Two- and four-year IHEs (including community colleges) accredited in, and having a campus located in the US, acting on behalf of their faculty members. Special Instructions for International Branch Campuses of US IHEs: If the proposal includes funding to be provided to an international branch campus of a US institution of higher education (including through use of sub-awards and consultant arrangements), the proposer must explain the benefit(s) to the project of performance at the international branch campus, and justify why the project activities cannot be performed at the US campus.

Applicant types

Grants.gov eligibility code 25
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Notice-specific evidence check

What an applicant must verify for Life and Environments Through Time (LET)

Applicant evidence

  • Applicant type: Other eligible applicants

Opportunity boundaries

  • Recorded funding: Estimated total program funding: $14,000,000
  • Recorded deadline: rolling; confirm review cycles and cut-off rules.
  • Recorded focus: Science, technology and research
Before investing in an application, connect every eligibility claim, required registration, submission component and deadline to the current official notice. Open the recorded official source →

Application checklist

How to apply for Life and Environments Through Time (LET)

The steps below turn the recorded grant fields into a pre-submission check. They do not replace the current Notice of Funding Opportunity or its amendments.

Recorded eligibility

  • • Applicant types: Grants.gov eligibility code 25.
  • • Geographic scope is not structured in this record.
  • • Notice summary: *Who May Submit Proposals: Proposals may only be submitted by the following: -null -Non-profit, non-academic organizations: Independent museums, observatories, research laboratories, professional societies and similar organizations located in the U.S. that are directly associated with educational or research activities. -Institutions of Higher Education (IHEs): Two- and four-year IHEs (including community colleges) accredited in, and having a campus located in the US, acting on behalf of their faculty members. Special Instructions for International Branch Campuses of US IHEs: If the proposal includes funding to be provided to an international branch campus of a US institution of higher education (including through use of sub-awards and consultant arrangements), the proposer must explain the benefit(s) to the project of performance at the international branch campus, and justify why the project activities cannot be performed at the US campus.

Focus areas: ST

Recorded deadline

Rolling — confirm the current review cycle and cut-off time

A missing or rolling date is not permission to assume an open application window.

  1. 1. Confirm fitMatch your applicant type, location, project scope and any cost-share or registration rule to the official notice.
  2. 2. Read the noticeCollect the current guidelines, amendments, budget rules, required attachments and submission instructions.
  3. 3. Check timingRecord the deadline time zone, internal review date and any earlier registration or portal cut-off.
  4. 4. Submit thereUse the official application route and save the confirmation or submission reference.

Official sources

Recorded source: https://www.grants.gov/xml-extract

Open official notice →

Last directory verification: Sep 26, 2026.