>
✔ 100% Money-Back Guarantee on Eligible Items
✔ Prices Displayed in Your Local Currency
✔ Final Price = No Surprise Import Fees
✔ Complimentary Insured Worldwide Shipping on Qualifying Orders
✔ Select Collector & Specialty Pieces May Require Secured Delivery Handling
by Isabel Thomas (Author), Dawn Cooper (Illustrator)
Do you know what you're made of? The answer is cells--thirty trillion of them--all working together to form one awesome human being: YOU.
'Fun, inspiring, and well researched.' - Kirkus Reviews, starred review of One Million Insects Did you know that the number of microorganisms in your body outnumber your own cells by 10 to 1? Or that every second, your body produces around 25 million new cells? Or that a human being has fewer chromosomes than, wait for it... a pineapple! 30 Trillion Cells provides a detailed look at the topic of the human body, covering of the body's major systems and organs, as well as looking at the cellular level and at the genetics that play a part in making us who we are. Readers will also explore the human body as a microbiome, discovering the trillions of 'good' microbes that live on and within us, doing their bit to keep us healthy. Features expansive, artistic illustration that is as beautiful to look at as it is educational.Author Biography
Isabel Thomas (Author)
Isabel Thomas studied Human Sciences at the University of Oxford. She is a science writer and children's author who has been shortlisted for the Royal Society Young People's Book Prize, the ASE Science Book of the Year, and the Blue Peter Book Awards. Isabel also writes for children's science magazines Whizz Pop Bang and The Week Junior Science + Nature, and for science outreach projects. She is a primary school governor and parent of three young sons.
Dawn Cooper
Dawn graduated from Bath School of Art & Design with a first-class degree in Graphic Communication in 2011, and she has rarely set down her pens and paper since! Her work includes non-fiction children's books, book covers, maps and packaging. Dawn finds great inspiration from the natural world, traditional botanical drawings, animals, works of fiction and illustrated quotations.
- ✔ Authenticity Guaranteed — Verified Designer Goods
- ✔ Sourced from Authorized European/U.S. Luxury Distributors
- ✔ Secure Checkout — SSL Encrypted Payments
- ✔ Fast Global Delivery — 3–11 Business Days
- ✔ Easy Returns on Eligible Items
- ✔ 100% Money-Back Guarantee — Full Refund if Not Satisfied
AUTHENTICITY GUARANTEED
Reserved for you — complete your purchase to secure this piece.
OFFICIALLY AUTHORIZED RESELLER
Discover Officially Authorized Authentic Items at STORE7994.com - Certificates Available on Request!
Independently verified for store quality and customer safety.
Trust score: 91/100
All designer items offered by STORE 7994 are sourced from trusted luxury distributors and verified through independent authentication services.
Learn how STORE 7994 authenticates luxury items
Guaranteed Authentic — Includes Brand Documentation & Third-Party Verification Options.
Shipping information
- Free Shipping* on all orders over $300 USD to most countries* Estimated delivery: 2-5 business days Mon-Sat to U.S., CA, EU etc.
- Tracking available: DHL Express
- Store 7994 Shipping policy
- Global delivery in 3–9 business days (location dependent).
- Free Worldwide Shipping $300+. International duties & VAT are calculated by destination country and may be collected upon delivery. UK orders are subject to 20% import VAT upon delivery.
Our innovation isn’t just in the brands we carry — it’s in the way we connect them. From our automation engine that keeps collections globally updated to our commitment to authenticity-first presentation, STORE 7994 exists where timeless design meets modern precision.
Every product we offer is:
Elevated · Intentional · Exclusive · Authentic
STORE 7994 is an authorized reseller of luxury fashion houses. Certificates and proof of authenticity are available to brand owners and partners upon request.
Returns & Refunds
We want you to shop with confidence at STORE 7994. If your purchase does not meet expectations, eligible items may be returned under the conditions below.
Return Eligibility
Items must be unused, unworn, and in original condition with all tags, packaging, and accessories included. Items showing any signs of wear or damage will not be accepted.
Return Window
Return requests must be made within 14 days of delivery.
Return Shipping
Customers are responsible for return shipping costs unless the item is defective, damaged, or incorrect.
Luxury Items
Items valued over $1,000 may be subject to a 7% restocking fee upon approved return.
Non-Returnable Items
For hygiene and product integrity reasons, the following items are final sale once opened or used:
• Underwear
• Fragrances
• Any worn or used items
Made-to-Order Items
Custom-designed products, including STORE 7994 hoodies, are made exclusively for each customer and are final sale. These items are not eligible for return or exchange unless defective or incorrect.
If you receive a defective or incorrect item, please contact us and we will make it right.
International Shipping & Duties
Many of our products ship directly from trusted international partners. Any applicable customs duties or import taxes are calculated at checkout and are non-refundable, even if the item is returned.
Returns & Associated Fees
All approved returns are subject to a $24 return processing fee. For international orders, duties, taxes, and return fees will be deducted from the original payment.
Shipping Policy
Complimentary shipping is offered on orders over $300. Orders below this threshold are subject to standard shipping rates at checkout.
